背景颜色仅在顶部
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【中文标题】背景颜色仅在顶部【英文标题】：Background color is only on top 【发布时间】：2021-12-10 05:11:15 【问题描述】：我需要你的帮助。我认为一切都很好，但它不起作用。在顶部和末端只有深蓝色的矩形。导航菜单和他的滑块有问题吗？我认为没有任何阻挡背景颜色的对象，我没有任何想法。你能帮我解决这个问题吗？感谢您的回复！
<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" >
<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> </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>```
【问题讨论】：
我认为这只是你的主菜单 img，看看吧！ 【参考方案1】：<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" >
<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> </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>
只需从（班级区域）更改背景颜色并选择您想要的颜色，一切都会好起来的
之前
.area
float: left;
background: #e2e2e2;
width: 100%;
height: 100%;
之后
.area
float: left;
background: #00008B;
width: 100%;
height: 100%;
【讨论】：
【参考方案2】：这是你想做的吗 I created an example for you
<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" >
<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> </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>
【讨论】：
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