当纯CSS菜单打开时，请防止body滚动，并允许菜单横跨设备高度时滚动

Question

我有一个纯CSS菜单，这使我大多在小屏幕/移动设备上引起了一些问题。

问题1 菜单打开时，背景仍然可以滚动。我希望重点放在菜单上，因此，当菜单打开时，背景不会滚动。

问题2 在小屏幕上，默认情况下，菜单项会折叠，并在单击以显示子菜单后展开。如果扩展了一个或两个，并且内容不在设备窗口之外，则无法向下滚动以查看当前窗口视图之外的内容。如果菜单是扩展的，则需要滚动。

我尝试了溢出属性，但无法解决问题。希望有人知道如何。谢谢！

	
		body {
  margin: 0;
  font-family: serif;
  background-color: #f4f4f4;
}
html {
	color: #222;
	font-size: 1.2em;
	line-height: 1;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}
/* ==========================================================================
   Global Header
   ========================================================================== */
.global-nav {
	/*overflow: hidden;*/
	background-color: #FFF;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 9999;
	padding: 28px 0 0 0;
}
.header {
	background-color: #fff;
	margin: 0 auto;
	width: 1170px;
	z-index: 3;
	clear: both;
}
.header div.menu {
	overflow: hidden;
	background-color: #fff;
	padding: 20px 0 0 0;
	-webkit-box-shadow: 0px 3px 3px 0px rgba(136,136,136,1);
	-moz-box-shadow: 0px 3px 3px 0px rgba(136,136,136,1);
	box-shadow: 0px 3px 3px 0px rgba(136,136,136,1);
	z-index: 99999999;
}
.header img {
	vertical-align: baseline;
}
.header div.menu ul.menu-links {
	margin: 0;
	padding: 0;
	list-style: none;
}
.menu-col-one {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-two {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-three {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-four {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-five {
	display: none;
}
.header div.menu ul.menu-links li a {
	display: block;
	padding: 20px 0 0 0;
}
.header .menu {
	clear: both;
	max-height: 0;
	transition: max-height .2s ease-out;
	width: 100%;
	position: fixed;
	left: 0;
}
.header .menu-icon {
	cursor: pointer;
	display: inline-block;
	padding: 31px 32px 25px 0;
	position: relative;
}
.header .menu-icon .navicon {
	background: #00539D;
	display: block;
	height: 2px;
	position: relative;
	transition: background .2s ease-out;
	width: 40px;
}
.header .menu-icon .navicon:before, .header .menu-icon .navicon:after {
	background: #00539D;
	content: '';
	display: block;
	height: 100%;
	position: absolute;
	transition: all .2s ease-out;
	width: 100%;
}
.header .menu-icon .navicon:before {
	top: 12px;
}
.header .menu-icon .navicon:after {
	top: -12px;
}
.header .menu-btn {
	display: none;
}
.header .menu-btn:checked ~ .menu {
	max-height: 100%;
}
.header .menu-btn:checked ~ .menu-icon .navicon {
	background: transparent;
}
.header .menu-btn:checked ~ .menu-icon .navicon:before {
	transform: rotate(-45deg);
}
.header .menu-btn:checked ~ .menu-icon .navicon:after {
	transform: rotate(45deg);
}
.header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before, .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
	top: 0;
}
.ac-container {
	width: 1170px;
	margin: 40px auto 30px auto;
	text-align: left;
}
.ac-container article {
	overflow: visible;
	padding-right: 30px;
}
.ac-container input {
	display: none;
}
.ac-container label {
	position: relative;
	z-index: 20;
	display: block;
	cursor: pointer;
	font-size: 25px;
}

@media only screen and (max-width: 1169px) {
.header {
	margin: 0 2%;
	width: 96%;
	padding-right: 0;
}
.ac-container {
	width: 96%;
	padding: 0 2%;
}
}
@media only screen and (max-width: 970px) {
.global-nav {
	padding: 14px 0 0 0;
}
.header .menu-icon {
	padding: 31px 1% 25px 0;
}
.header-content-right {
	display: none;
}
.header div.menu {
	margin-top: 0px;
}
.header div.menu ul.menu-links {
	margin: 0;
}
.menu-col-one {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-left: 0%;
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-two {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-three {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-four {
	width: 100%; 
	margin-right: 0%;
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-five {
	width: 100%; 
	margin-right: 0%;
	display: block;
}
.header div.menu ul li.list-header {
	display: block !important;
}
.header div.menu ul li.list-item {
	display: none;
}
.ac-container label {
	font-size: 16px;
	color: #636c76;
	font-weight: bold;
	letter-spacing: 0.2px;
}
.ac-container input:checked + label, .ac-container input:checked + label:hover {
	color: #454545;
}
.ac-container input + label:after {
	content: '';
	position: absolute;
	width: 24px;
	height: 24px;
	right: 13px;
	top: -6px;
}
.ac-container article {
	background: rgba(255, 255, 255, 0.5);
	margin-top: -1px;
	overflow: hidden;
	position: relative;
	z-index: 10;
	-webkit-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-moz-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-o-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-ms-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	max-height: 0;
	font-size: 14px;
}
.ac-container article a {
	color: #636c76;
}
.ac-container article p {
	line-height: 23px;
	font-size: 14px;
	padding: 20px;
}
.ac-container article ul li {
	padding: 10px 0;
}
.ac-container article ul li span {
	display: none;
}
.ac-container input:checked ~ article {
	-webkit-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-moz-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-o-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-ms-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	max-height: 500px;/*added*/
}
}

<!-- [Start] Header Section-->
<section class="global-nav" role="region" aria-label="globalnav">
  <header class="header" role="banner">
    <input class="menu-btn" type="checkbox" id="menu-btn" />
    <label class="menu-icon" for="menu-btn"><span class="navicon"></span></label>
    <div class="menu">
      <section class="ac-container">
        <div class="menu-col-one">
          <input id="ac-1" name="accordion-1" type="checkbox" />
          <label for="ac-1">DD 1</label>
          <article class="ac-small">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-two">
          <input id="ac-2" name="accordion-1" type="checkbox" />
          <label for="ac-2">DD 2</label>
          <article class="ac-medium">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-three">
          <input id="ac-3" name="accordion-1" type="checkbox" />
          <label for="ac-3">DD 3</label>
          <article class="ac-large">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-four">
          <input id="ac-4" name="accordion-1" type="checkbox" />
          <label for="ac-4">DD 4</label>
          <article class="ac-large">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-five">
          <div class="btn-group">
            <button class="btn">Button</button>
            <button class="btn">Button</button>
            <button class="btn">Button</button>
          </div>
        </div>
      </section>
    </div>
  </header>
</section>
<!-- [End] Header Section--> 
<!-- [Start] Main Content -->
<main role="main">
  <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
  <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
    <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
  
  <!-- [End] Main Content --> 
</main>

Answer 1

快速答案：

• 在main和.menu上添加overflow: auto
• 将height: 100%添加到html, body, main。
• 将max-height: 100%添加到.menu

使标头缩小了17px，仅在底部显示盒子阴影。您必须将其覆盖为完全删除滚动条的移动设备...

就个人而言，我只会在身体顶部添加一个填充物，然后让菜单滑过内容。这将是最优雅的。

body {
  margin: 0;
  font-family: serif;
  background-color: #f4f4f4;
  height: 100%; /* My code */
}
html {
	color: #222;
	font-size: 1.2em;
	line-height: 1;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
  height: 100%; /* My code */
  overflow: hidden; /* My code */
}
/* My code */
main {
  height: 100%;
  overflow: auto;
}
/* ==========================================================================
   Global Header
   ========================================================================== */
.global-nav {
	/*overflow: hidden;*/
	background-color: #FFF;
	position: fixed;
	top: 0;
	left: 0;
	width: calc(100% - 17px); /* My code */
	z-index: 9999;
	padding: 28px 0 0 0;
}
.header {
	background-color: #fff;
	margin: 0 auto;
	width: 1170px;
	z-index: 3;
	clear: both;
}
.header div.menu {
	overflow: hidden;
	background-color: #fff;
	padding: 20px 0 0 0;
	-webkit-box-shadow: 0px 5px 3px -3px rgba(136,136,136,1); /* My code */
	-moz-box-shadow: 0px 5px 3px -3px rgba(136,136,136,1); /* My code */
	box-shadow: 0px 5px 3px -3px rgba(136,136,136,1); /* My code */
	z-index: 99999999;
}
.header img {
	vertical-align: baseline;
}
.header div.menu ul.menu-links {
	margin: 0;
	padding: 0;
	list-style: none;
}
.menu-col-one {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-two {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-three {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-four {
	width: 25%;
	float: left;
	position: relative;
	padding-bottom: 60px;
}
.menu-col-five {
	display: none;
}
.header div.menu ul.menu-links li a {
	display: block;
	padding: 20px 0 0 0;
}
.header .menu {
	clear: both;
	max-height: 0;
	transition: max-height .2s ease-out;
	width: calc(100% - 17px); /* My code */
	position: fixed;
	left: 0;
}
.header .menu-icon {
	cursor: pointer;
	display: inline-block;
	padding: 31px 32px 25px 0;
	position: relative;
}
.header .menu-icon .navicon {
	background: #00539D;
	display: block;
	height: 2px;
	position: relative;
	transition: background .2s ease-out;
	width: 40px;
}
.header .menu-icon .navicon:before, .header .menu-icon .navicon:after {
	background: #00539D;
	content: '';
	display: block;
	height: 100%;
	position: absolute;
	transition: all .2s ease-out;
	width: 100%;
}
.header .menu-icon .navicon:before {
	top: 12px;
}
.header .menu-icon .navicon:after {
	top: -12px;
}
.header .menu-btn {
	display: none;
}
.header .menu-btn:checked ~ .menu {
  max-height: calc(100% - 20px); /* My code */
  overflow: auto; /* My code */
}
.header .menu-btn:checked ~ .menu-icon .navicon {
	background: transparent;
}
.header .menu-btn:checked ~ .menu-icon .navicon:before {
	transform: rotate(-45deg);
}
.header .menu-btn:checked ~ .menu-icon .navicon:after {
	transform: rotate(45deg);
}
.header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before, .header .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
	top: 0;
}
.ac-container {
	width: 1170px;
	margin: 40px auto 30px auto;
	text-align: left;
}
.ac-container article {
	overflow: visible;
	padding-right: 30px;
}
.ac-container input {
	display: none;
}
.ac-container label {
	position: relative;
	z-index: 20;
	display: block;
	cursor: pointer;
	font-size: 25px;
}

@media only screen and (max-width: 1169px) {
.header {
	margin: 0 2%;
	width: 96%;
	padding-right: 0;
}
.ac-container {
	width: 96%;
	padding: 0 2%;
}
}
@media only screen and (max-width: 970px) {
.global-nav {
	padding: 14px 0 0 0;
}
.header .menu-icon {
	padding: 31px 1% 25px 0;
}
.header-content-right {
	display: none;
}
.header div.menu {
	margin-top: 0px;
}
.header div.menu ul.menu-links {
	margin: 0;
}
.menu-col-one {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-left: 0%;
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-two {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-three {
	width: 100%;
	border-bottom: 1px solid #f1f1f1; 
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-four {
	width: 100%; 
	margin-right: 0%;
	margin-bottom: 30px;
	padding-bottom: 25px;
}
.menu-col-five {
	width: 100%; 
	margin-right: 0%;
	display: block;
}
.header div.menu ul li.list-header {
	display: block !important;
}
.header div.menu ul li.list-item {
	display: none;
}
.ac-container label {
	font-size: 16px;
	color: #636c76;
	font-weight: bold;
	letter-spacing: 0.2px;
}
.ac-container input:checked + label, .ac-container input:checked + label:hover {
	color: #454545;
}
.ac-container input + label:after {
	content: '';
	position: absolute;
	width: 24px;
	height: 24px;
	right: 13px;
	top: -6px;
}
.ac-container article {
	background: rgba(255, 255, 255, 0.5);
	margin-top: -1px;
	overflow: hidden;
	position: relative;
	z-index: 10;
	-webkit-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-moz-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-o-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	-ms-transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	transition: max-height 0.3s ease-out, box-shadow 0.6s linear;
	max-height: 0;
	font-size: 14px;
}
.ac-container article a {
	color: #636c76;
}
.ac-container article p {
	line-height: 23px;
	font-size: 14px;
	padding: 20px;
}
.ac-container article ul li {
	padding: 10px 0;
}
.ac-container article ul li span {
	display: none;
}
.ac-container input:checked ~ article {
	-webkit-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-moz-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-o-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	-ms-transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	transition: max-height 0.5s ease-in, box-shadow 0.1s linear;
	max-height: 500px;/*added*/
}
}

<!-- [Start] Header Section-->
<section class="global-nav" role="region" aria-label="globalnav">
  <header class="header" role="banner">
    <input class="menu-btn" type="checkbox" id="menu-btn" />
    <label class="menu-icon" for="menu-btn"><span class="navicon"></span></label>
    <div class="menu">
      <section class="ac-container">
        <div class="menu-col-one">
          <input id="ac-1" name="accordion-1" type="checkbox" />
          <label for="ac-1">DD 1</label>
          <article class="ac-small">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-two">
          <input id="ac-2" name="accordion-1" type="checkbox" />
          <label for="ac-2">DD 2</label>
          <article class="ac-medium">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-three">
          <input id="ac-3" name="accordion-1" type="checkbox" />
          <label for="ac-3">DD 3</label>
          <article class="ac-large">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-four">
          <input id="ac-4" name="accordion-1" type="checkbox" />
          <label for="ac-4">DD 4</label>
          <article class="ac-large">
            <ul class="menu-links">
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
              <li><a href="#">Link</a> <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span></li>
            </ul>
          </article>
        </div>
        <div class="menu-col-five">
          <div class="btn-group">
            <button class="btn">Button</button>
            <button class="btn">Button</button>
            <button class="btn">Button</button>
          </div>
        </div>
      </section>
    </div>
  </header>
</section>
<!-- [End] Header Section--> 
<!-- [Start] Main Content -->
<main role="main">
  <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
  <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
    <p><span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span> Nullam velit nulla, sagittis non massa et, volutpat ullamcorper nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Quisque in dui quis justo consectetur feugiat et a dui. Integer eget justo eleifend, mattis lectus dictum, fermentum urna. Integer vitae elit non sem vehicula euismod sed non massa. Sed ac lacus tempus, pharetra lectus vel, vehicula felis. Sed pharetra viverra nisi sed euismod.</p>
  <p>Nam sodales, massa non eleifend dignissim, diam felis suscipit eros, at semper diam justo ut arcu. Duis molestie nec nisi a maximus. Vestibulum in congue risus. Suspendisse potenti. Aliquam sodales neque ac pulvinar facilisis. Curabitur a lacinia ante. Mauris tempus risus lorem, vitae fermentum dolor congue in. Fusce at tristique dolor. Etiam pellentesque lectus malesuada risus malesuada luctus. Pellentesque quis quam vulputate, sagittis orci eget, egestas purus. Proin pulvinar felis et risus placerat lacinia.</p>
  <p>In condimentum fermentum efficitur. Mauris non eros ac leo aliquam euismod eget ac metus. Aenean nec eros quis orci eleifend scelerisque. Aliquam finibus vestibulum efficitur. Quisque faucibus id tortor ac gravida. Maecenas eros sapien, mollis eu libero id, faucibus viverra velit. Fusce id blandit quam. Nullam vitae mi lorem. Cras vitae tortor placerat, viverra tellus ut, mattis enim. Aenean sit amet ante tortor. Pellentesque et dignissim urna.</p>
  <p>Morbi in mollis neque, et elementum libero. Sed luctus, metus a posuere tempor, magna ante tempor leo, tempus ultrices nulla est sit amet ipsum. Curabitur bibendum aliquet erat eget interdum. Duis a egestas mi, et molestie lacus. Quisque in lorem nisi. Nulla vestibulum arcu est. Morbi blandit lacinia eleifend.</p>
  <p>Quisque malesuada ex non dui dapibus, vitae pellentesque lacus hendrerit. Pellentesque euismod id elit non auctor. Sed tempus cursus vulputate. Praesent posuere ligula nunc. Fusce libero tellus, semper in justo fringilla, dignissim accumsan nulla. Nunc semper magna metus, sit amet vehicula urna aliquet id. Donec urna sem, pellentesque id justo a, rutrum maximus dui. Fusce vel condimentum purus. Vestibulum ultricies, massa eget aliquet imperdiet, orci quam luctus ante, in ornare tortor dui at lectus. Vivamus eget luctus felis. Sed pretium ornare vulputate. Nam in vulputate nisi. Fusce magna nibh, placerat et nulla eu, vulputate posuere sapien. Suspendisse sagittis enim ut semper efficitur. Fusce dignissim enim sed magna gravida, et pretium erat ultrices. Nulla dui augue, scelerisque vel leo nec, tempor auctor purus. </p>
  
  <!-- [End] Main Content --> 
</main>