小贝子编程

html侧边栏居中的图像页脚



我正在为我的网站制作一个新的侧边栏，如果你在一个完整的窗口中查看下面的代码片段，你可以看到"sideBarFooter"元素(它包含图像和下面的一些文本(。

我试着让这个页脚总是在侧边栏的底部，我试着添加页边空白顶部和页边空白底部的样式，但没有成功。如何将sideBarFooter对齐到侧边栏元素的底部？

$(document).ready(function() {
$('#sidebarCollapse').on('click', function() {
$('#sidebar').toggleClass('active');
});
});
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #ffffff;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
.btn-info {
color: #fff;
background-color: #b81717;
border-color: #52b817;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
.line {
width: 100%;
height: 1px;
border-bottom: 1px dashed #ddd;
margin: 40px 0;
}

/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: #f7f9fb;
/* NAVBAR BACKGROUND */
color: rgb(0, 0, 0);
transition: all 0.3s;
}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
/* background: #6d7fcc; */
}
#sidebar ul.components {
/* padding: 20px 0; */
/* border-bottom: 1px solid #47748b; */
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
.currentPage,
.currentPage * {
background: #bed6b8 !important;
}
#sidebar ul li a:hover {
color: #000;
background: #8FC1E3;
/* hover tab color */
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
/* color: #fff; */
background: #f7f9fb;
/* active tab */
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #f7f9fb;
/* tab list color */
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}

/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}

/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
color: pink display: inline;
}
}

/* Sidebar expand/collapse button */
#sidebutton {
margin-left: 100%;
box-shadow: 0px 1px 4px 1px rgba(0, 0, 0, .3);
border: none;
height: 40px;
width: 40px;
border-radius: 50%;
cursor: pointer;
}
#sideBarFooter{
}
<!-- jQuery CDN - Slim version (=without AJAX) -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<!-- Popper.JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
<!-- Bootstrap JS -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
<!-- bootstrap css-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<!-- Page Content -->
<div class="wrapper" class="toggled">
<!-- Sidebar  -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Website Title</h3> <button id='sidebutton'>M</button>
</div>
<ul class="list-unstyled components">
<li class="currentPage">
<a href="#">Home</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#contactSubmenu" data-toggle="collapse" aria-expanded="true" class="dropdown-toggle">Contact</a>
<ul class="collapse list-unstyled" id="contactSubmenu">
<li>
<a href="#">Email</a>
</li>
<li>
<a href="#">Github</a>
</li>
<li>
<a href="#">LinkedIn</a>
</li>
<li>
<a href="#">Resume</a>
</li>
</ul>
</li>
</ul>
<!-- Footer -->
<div id='sideBarFooter' class="sidebar-footer">
<img src="https://www.w3schools.com/images/w3schools_green.jpg" alt="W3Schools.com">
<p>Color 1: #657856</p>
<p>Color 2: #657856</p>
<p>Color 3: #657856</p>
</div>
</nav>
</div>

您可以使用id侧边栏将display: flex和flex-direction: column以及像height: 100vh这样的设置高度添加到您的nav元素中。然后你只需要给页脚margin-top: auto，它就会与其他元素保持社交距离。

快速提示：不要按ID来设计风格，这是不好的做法。以下是MDN在CSS中使用的一些其他规则，我觉得它很有用。

使用您的示例作为基础，您只需要添加一些样式就可以了。

我做了什么：

  1. body和html具有height: 100%;
  2. .wrapper具有height: 100%
  3. CCD_ 10具有CCD_ 11和CCD_
  4. #sideBarFooter具有margin-top: auto

$(document).ready(function() {
$('#sidebarCollapse').on('click', function() {
$('#sidebar').toggleClass('active');
});
});
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #ffffff;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
.btn-info {
color: #fff;
background-color: #b81717;
border-color: #52b817;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
.line {
width: 100%;
height: 1px;
border-bottom: 1px dashed #ddd;
margin: 40px 0;
}
body, 
html {
height: 100%;
}

/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
height: 100%;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: #f7f9fb;
/* NAVBAR BACKGROUND */
color: rgb(0, 0, 0);
transition: all 0.3s;

display: flex;
flex-direction: column;

}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
/* background: #6d7fcc; */
}
#sidebar ul.components {
/* padding: 20px 0; */
/* border-bottom: 1px solid #47748b; */
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
.currentPage,
.currentPage * {
background: #bed6b8 !important;
}
#sidebar ul li a:hover {
color: #000;
background: #8FC1E3;
/* hover tab color */
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
/* color: #fff; */
background: #f7f9fb;
/* active tab */
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #f7f9fb;
/* tab list color */
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}

/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}

/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
color: pink display: inline;
}
}

/* Sidebar expand/collapse button */
#sidebutton {
margin-left: 100%;
box-shadow: 0px 1px 4px 1px rgba(0, 0, 0, .3);
border: none;
height: 40px;
width: 40px;
border-radius: 50%;
cursor: pointer;
}
#sideBarFooter{
margin-top: auto;
}
<!-- jQuery CDN - Slim version (=without AJAX) -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<!-- Popper.JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
<!-- Bootstrap JS -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
<!-- bootstrap css-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<!-- Page Content -->
<div class="wrapper" class="toggled">
<!-- Sidebar  -->
<nav id="sidebar">
<div class="sidebar-header">
<h3>Website Title</h3> <button id='sidebutton'>M</button>
</div>
<ul class="list-unstyled components">
<li class="currentPage">
<a href="#">Home</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#contactSubmenu" data-toggle="collapse" aria-expanded="true" class="dropdown-toggle">Contact</a>
<ul class="collapse list-unstyled" id="contactSubmenu">
<li>
<a href="#">Email</a>
</li>
<li>
<a href="#">Github</a>
</li>
<li>
<a href="#">LinkedIn</a>
</li>
<li>
<a href="#">Resume</a>
</li>
</ul>
</li>
</ul>
<!-- Footer -->
<div id='sideBarFooter' class="sidebar-footer">
<img src="https://www.w3schools.com/images/w3schools_green.jpg" alt="W3Schools.com">
<p>Color 1: #657856</p>
<p>Color 2: #657856</p>
<p>Color 3: #657856</p>
</div>
</nav>
</div>

两件事：

height: 100vh

首先，元素的父级(在本例中为#sidebar(的高度应为视口的100%。你问vh是什么？点击此处了解更多信息。

position: absolute、bottom: 0

现在您可以使用position: absolute和bottom: 0。这将使所述页脚位于页面底部。

为什么要迈出第一步

事实上，如果没有第一步，这将起作用，但#sidebar不会从上到下，因此会影响灰色背景。

#sidebar {
/* etc... */
height: 100vh
}

#sideBarFooter{
position: absolute;
bottom: 0
}

工作示例

快乐黑客，Bobbbay

请注意，不要将id与CSS一起使用。这是一种糟糕的做法。

您应该尝试将侧边栏页脚定位为绝对值。尝试将此添加到您的css：

#sideBarFooter{
position:absolute;
bottom : 0;
}

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