背景色仅在顶部

我需要你的帮助。我想一切都好，但是行不通。顶部和底部只有深蓝色的矩形。导航菜单和滑块有问题吗?我想一个没有任何遮挡背景颜色的物体，我没有任何想法。你能帮我解决这个问题吗?谢谢你的回复!

<head>

<link rel="icon" href="/minimenu.png">
</head>
<body style="background-color:darkblue;"><div class="area"></div><nav class="main-menu"><img src="https://i.ibb.co/xC42G9x/f19ada7376b147df815f4dc7438317e0-5.png" alt="Trulli" width="155" height="">
<ul>
<li>
<a href="/welcome.php">

<i class="fa fa-home fa-2x"></i>
<span class="nav-text">
Home
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-book fa-2x"></i>
<span class="nav-text">
Homework
</span>
</a>
</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-list fa-2x"></i>
<span class="nav-text">
Grades    
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-table fa-2x"></i>
<span class="nav-text">
Timetable
</span>
</a>

</li>
<li>
<a href="#">
<i class="fa fa-leanpub fa-2x"></i>
<span class="nav-text">
Learning
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-gamepad fa-2x"></i>
<span class="nav-text">
Games
</span>
</a>
</li>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p>
<p hidden>TU SA ZACINA SUBMENU</p>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 1
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 2
</span>
</a>
</li>
<p hidden>TU SA KONCI SUBMENU</p>  
</ul>
<ul class="logout">
<li>
<a href="/index.php">
<i class="fa fa-sign-out fa-2x"></i>
<span class="nav-text">
Logout
</span>
</a>
</li>  
</ul>
</nav>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

</body>
</html>
<style>@import url(//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css);
}
@import url(https://fonts.googleapis.com/css?family=Titillium+Web:300);
.fa-2x {
font-size: 2em;
}
.fa {
position: relative;
display: table-cell;
width: 60px;
height: 36px;
text-align: center;
vertical-align: middle;
font-size:20px;
}

.main-menu:hover,nav.main-menu.expanded {
width:250px;
overflow:visible;
}
.main-menu {
background:darkblue;
border-right:1px solid #e5e5e5;
position:absolute;
top:0;
bottom:0;
height:100%;
left:0;
width:60px;
overflow:hidden;
-webkit-transition:width .05s linear;
transition:width .05s linear;
-webkit-transform:translateZ(0) scale(1,1);
z-index:1000;
}
.main-menu>ul {
margin:7px 0;
}
.main-menu li {
position:relative;
display:block;
width:250px;
}
.main-menu li>a {
position:relative;
display:table;
border-collapse:collapse;
border-spacing:0;
color:#999;
font-family: arial;
font-size: 14px;
text-decoration:none;
-webkit-transform:translateZ(0) scale(1,1);
-webkit-transition:all .1s linear;
transition:all .1s linear;

}
.main-menu .nav-icon {
position:relative;
display:table-cell;
width:60px;
height:36px;
text-align:center;
vertical-align:middle;
font-size:18px;
}
.main-menu .nav-text {
position:relative;
display:table-cell;
vertical-align:middle;
width:190px;
font-family: 'Titillium Web', sans-serif;
}
.main-menu>ul.logout {
position:absolute;
left:0;
bottom:0;
}
.no-touch .scrollable.hover {
overflow-y:hidden;
}
.no-touch .scrollable.hover:hover {
overflow-y:auto;
overflow:visible;
}
a:hover,a:focus {
text-decoration:none;
}
nav {
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
-o-user-select:none;
user-select:none;
}
nav ul,nav li {
outline:0;
margin:0;
padding:0;
}
.main-menu li:hover>a,nav.main-menu li.active>a,.dropdown-menu>li>a:hover,.dropdown-menu>li>a:focus,.dropdown-menu>.active>a,.dropdown-menu>.active>a:hover,.dropdown-menu>.active>a:focus,.no-touch .dashboard-page nav.dashboard-menu ul li:hover a,.dashboard-page nav.dashboard-menu ul li.active a {
color:#fff;
background-color:#5fa2db;
}
.area {
float: left;
background: #e2e2e2;
width: 100%;
height: 100%;
}
@font-face {
font-family: 'Titillium Web';
font-style: normal;
font-weight: 300;
src: local('Titillium WebLight'), local('TitilliumWeb-Light'), url(http://themes.googleusercontent.com/static/fonts/titilliumweb/v2/anMUvcNT0H1YN4FII8wpr24bNCNEoFTpS2BTjF6FB5E.woff) format('woff');
}
</style>```

<head>

<link rel="icon" href="/minimenu.png">
</head>
<body style="background-color:darkblue;"><div class="area"></div><nav class="main-menu"><img src="https://i.ibb.co/xC42G9x/f19ada7376b147df815f4dc7438317e0-5.png" alt="Trulli" width="155" height="">
<ul>
<li>
<a href="/welcome.php">

<i class="fa fa-home fa-2x"></i>
<span class="nav-text">
Home
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-book fa-2x"></i>
<span class="nav-text">
Homework
</span>
</a>
</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-list fa-2x"></i>
<span class="nav-text">
Grades    
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-table fa-2x"></i>
<span class="nav-text">
Timetable
</span>
</a>

</li>
<li>
<a href="#">
<i class="fa fa-leanpub fa-2x"></i>
<span class="nav-text">
Learning
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-gamepad fa-2x"></i>
<span class="nav-text">
Games
</span>
</a>
</li>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p>
<p hidden>TU SA ZACINA SUBMENU</p>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 1
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 2
</span>
</a>
</li>
<p hidden>TU SA KONCI SUBMENU</p>  
</ul>

<ul class="logout">
<li>
<a href="/index.php">
<i class="fa fa-sign-out fa-2x"></i>
<span class="nav-text">
Logout
</span>
</a>
</li>  
</ul>
</nav>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

</body>
</html>
<style>@import url(//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css);
@import url(https://fonts.googleapis.com/css?family=Titillium+Web:300);
.fa-2x {
font-size: 2em;
}
.fa {
position: relative;
display: table-cell;
width: 60px;
height: 36px;
text-align: center;
vertical-align: middle;
font-size:20px;
}

.main-menu:hover,nav.main-menu.expanded {
width:250px;
overflow:visible;
}

.main-menu {
background:darkblue;
border-right:1px solid #e5e5e5;
position:absolute;
top:0;
bottom:0;
height:100%;
left:0;
width:60px;
overflow:hidden;
-webkit-transition:width .05s linear;
transition:width .05s linear;
-webkit-transform:translateZ(0) scale(1,1);
z-index:1000;
}

.main-menu>ul {
margin:7px 0;
}

.main-menu li {
position:relative;
display:block;
width:250px;
}

.main-menu li>a {
position:relative;
display:table;
border-collapse:collapse;
border-spacing:0;
color:#999;
font-family: arial;
font-size: 14px;
text-decoration:none;
-webkit-transform:translateZ(0) scale(1,1);
-webkit-transition:all .1s linear;
transition:all .1s linear;

}

.main-menu .nav-icon {
position:relative;
display:table-cell;
width:60px;
height:36px;
text-align:center;
vertical-align:middle;
font-size:18px;
}

.main-menu .nav-text {
position:relative;
display:table-cell;
vertical-align:middle;
width:190px;
font-family: 'Titillium Web', sans-serif;
}

.main-menu>ul.logout {
position:absolute;
left:0;
bottom:0;
}

.no-touch .scrollable.hover {
overflow-y:hidden;
}

.no-touch .scrollable.hover:hover {
overflow-y:auto;
overflow:visible;
}

a:hover,a:focus {
text-decoration:none;
}

nav {
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
-o-user-select:none;
user-select:none;
}

nav ul,nav li {
outline:0;
margin:0;
padding:0;
}
.main-menu li:hover>a,nav.main-menu li.active>a,.dropdown-menu>li>a:hover,.dropdown-menu>li>a:focus,.dropdown-menu>.active>a,.dropdown-menu>.active>a:hover,.dropdown-menu>.active>a:focus,.no-touch .dashboard-page nav.dashboard-menu ul li:hover a,.dashboard-page nav.dashboard-menu ul li.active a {
color:#fff;
background-color:#5fa2db;
}
.area {
float: left;
background: #00008B;
width: 100%;
height: 100%;
}
@font-face {
font-family: 'Titillium Web';
font-style: normal;
font-weight: 300;
src: local('Titillium WebLight'), local('TitilliumWeb-Light'), url(http://themes.googleusercontent.com/static/fonts/titilliumweb/v2/anMUvcNT0H1YN4FII8wpr24bNCNEoFTpS2BTjF6FB5E.woff) format('woff');
}
</style>

只要改变(类区域)的背景颜色，并选择你想要的颜色，一切都会好的

前

.area {
float: left;
background: #e2e2e2;
width: 100%;
height: 100%;
}

>
.area { float: left; background: #00008B; width: 100%; height: 100%; }

这是你想要做的吗我为你创建了一个例子

<head>

<link rel="icon" href="/minimenu.png">
</head>
<body><div class="area"></div><nav class="main-menu"><img src="https://i.ibb.co/xC42G9x/f19ada7376b147df815f4dc7438317e0-5.png" alt="Trulli" width="155" height="">
<ul style="background-color:darkblue;">
<li>
<a href="/welcome.php">

<i class="fa fa-home fa-2x"></i>
<span class="nav-text">
Home
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-book fa-2x"></i>
<span class="nav-text">
Homework
</span>
</a>
</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-list fa-2x"></i>
<span class="nav-text">
Grades    
</span>
</a>

</li>
<li class="has-subnav">
<a href="#">
<i class="fa fa-table fa-2x"></i>
<span class="nav-text">
Timetable
</span>
</a>

</li>
<li>
<a href="#">
<i class="fa fa-leanpub fa-2x"></i>
<span class="nav-text">
Learning
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-gamepad fa-2x"></i>
<span class="nav-text">
Games
</span>
</a>
</li>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p>
<p hidden>TU SA ZACINA SUBMENU</p>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 1
</span>
</a>
</li>
<li>
<a href="#">
<i class="fa fa-bars fa-2x"></i>
<span class="nav-text">
Submenu 2
</span>
</a>
</li>
<p hidden>TU SA KONCI SUBMENU</p>  
</ul>
<ul class="logout">
<li>
<a href="/index.php">
<i class="fa fa-sign-out fa-2x"></i>
<span class="nav-text">
Logout
</span>
</a>
</li>  
</ul>
</nav>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

</body>
</html>
<style>@import url(//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css);
}
@import url(https://fonts.googleapis.com/css?family=Titillium+Web:300);
.fa-2x {
font-size: 2em;
}
.fa {
position: relative;
display: table-cell;
width: 60px;
height: 36px;
text-align: center;
vertical-align: middle;
font-size:20px;
}

.main-menu:hover,nav.main-menu.expanded {
width:250px;
overflow:visible;
}
.main-menu {
background:darkblue;
border-right:1px solid #e5e5e5;
position:absolute;
top:0;
bottom:0;
height:100%;
left:0;
width:60px;
overflow:hidden;
-webkit-transition:width .05s linear;
transition:width .05s linear;
-webkit-transform:translateZ(0) scale(1,1);
z-index:1000;
}
.main-menu>ul {
margin:7px 0;
}
.main-menu li {
position:relative;
display:block;
width:250px;
}
.main-menu li>a {
position:relative;
display:table;
border-collapse:collapse;
border-spacing:0;
color:#999;
font-family: arial;
font-size: 14px;
text-decoration:none;
-webkit-transform:translateZ(0) scale(1,1);
-webkit-transition:all .1s linear;
transition:all .1s linear;

}
.main-menu .nav-icon {
position:relative;
display:table-cell;
width:60px;
height:36px;
text-align:center;
vertical-align:middle;
font-size:18px;
}
.main-menu .nav-text {
position:relative;
display:table-cell;
vertical-align:middle;
width:190px;
font-family: 'Titillium Web', sans-serif;
}
.main-menu>ul.logout {
position:absolute;
left:0;
bottom:0;
}
.no-touch .scrollable.hover {
overflow-y:hidden;
}
.no-touch .scrollable.hover:hover {
overflow-y:auto;
overflow:visible;
}
a:hover,a:focus {
text-decoration:none;
}
nav {
-webkit-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
-o-user-select:none;
user-select:none;
}
nav ul,nav li {
outline:0;
margin:0;
padding:0;
}
.main-menu li:hover>a,nav.main-menu li.active>a,.dropdown-menu>li>a:hover,.dropdown-menu>li>a:focus,.dropdown-menu>.active>a,.dropdown-menu>.active>a:hover,.dropdown-menu>.active>a:focus,.no-touch .dashboard-page nav.dashboard-menu ul li:hover a,.dashboard-page nav.dashboard-menu ul li.active a {
color:#fff;
background-color:#5fa2db;
}
.area {
float: left;
background: #e2e2e2;
width: 100%;
height: 100%;
}
@font-face {
font-family: 'Titillium Web';
font-style: normal;
font-weight: 300;
src: local('Titillium WebLight'), local('TitilliumWeb-Light'), url(http://themes.googleusercontent.com/static/fonts/titilliumweb/v2/anMUvcNT0H1YN4FII8wpr24bNCNEoFTpS2BTjF6FB5E.woff) format('woff');
}
</style>

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