我的遮罩层高度设置为什么不起作用
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>网页布局基础练习</title>
<link rel="stylesheet" href="css/index.css" type="text/css"/>
</head>
<body>
<!--网页头部-->
<div class="header">
<div class="logo">
<img src="image/logo.png" alt=""/>
</div>
<div class="nav">
<ul>
<li>首页</li>
<li>图片</li>
<li>视频</li>
<li>手记</li>
<span class="loginbutton">登录</span>
<span class="regebutton">注册</span>
</ul>
</div>
</div>
<!--网页主体部分-->
<div class="main">
<!--页面主体上部-->
<div class="top"></div>
<div class="top-layer"> </div>
<div class="content">
<div class="word">MY BEAUTIFUL LIFE</div>
<button>LOOK MORE ></button>
</div>
<!--页面主体中部-->
<div class="middle">
<div class="mid-top">
<div class="common">
<img src="image/weibo.png">
<div class="comm-word">MICROBLOG</div>
</div>
<div class="common">
<img src="image/weixin.png">
<div class="comm-word">WECHAT</div>
</div>
<div class="common">
<img src="image/QQ.png">
<div class="comm-word">QQ</div>
</div>
</div>
<div class="mid-middle">
"I want to give good things to record down,<br/>
after the recall will be very beautiful."
</div>
<div class="mid-bottom">
<div class="mid-bottom-common">
<img src="image/03-01.jpg">
<div class="comm-1">Cool Image</div>
<div class="comm-2">Record The Picture</div>
</div>
<div class="mid-bottom-common">
<img src="image/03-02.jpg">
<div class="comm-1">Cool Image</div>
<div class="comm-2">Record The Picture</div>
</div>
<div class="mid-bottom-common">
<img src="image/03-03.jpg">
<div class="comm-1">Cool Image</div>
<div class="comm-2">Record The Picture</div>
</div>
</div>
</div>
<!--页面主体下部-->
<div class="bottom">
<div class="bottom-tit">
FROM THE PHOTO ALBUM
</div>
<div class="bottom-container">
<div class="bot-comm">
<img src="image/04-01.jpg">
<div class="bot-des">
Life is like a book, just read more and more refined,
more write more carefully. When read, mind open, all
things have been indifferent to heart. Life is the
precipitation.
</div>
</div>
<div class="bot-comm">
<img src="image/04-02.jpg">
<div class="bot-des">
Life is like a cup of tea, let people lead a person to endless aftertastes.
You again good taste, it will always have a different taste, different
people will have different taste more.
</div>
</div>
</div>
</div>
</div>
<!--网页底部-->
<div class="footer">
© 2016 imooc.com 京ICP备13046642号
</div>
<!--弹出层遮罩-->
<div class="layer-mask" id="layer-mask"></div>
<!--弹出层窗体-->
<div class="layer-pop" id="layer-pop">
<!--弹出层关闭按钮-->
<div class="pop-close">×</div>
<!--弹出层内容-->
<div class="pop-content"></div>
</div>
</body>
</html>
//以下是css设置
*{
padding: 0;
margin:0;
}
html,body{
height:100%;
}
.layer-mask{
z-index:99999;
position:fixed;
top:0;
left:0;
width:100%;
height:100%;
background-color:#000;
opacity:0.5;
}
.header{
width: 100%;
height: 100px;
}
.header .logo img{
width:300px;
height: 85px;
margin-top: 8px;
margin-left: 150px;
float: left;
}
.header .menu{
height: 100px;
float: right;
}
.header .menu ul{
margin-right: 50px;
}
.header .menu li{
float: right;
list-style-type: none;
width: 80px;
font-family: "微软雅黑";
color: #7D7D7D;
font-size: 15px;
line-height: 100px;
font-weight: bold;
text-align: center;
}
.main .pic img{
width: 100%;
height: 600px;
position: relative;
}
.topLayer{
background-color: #000000;
opacity: 0.5;
z-index: 1;
position: absolute;
top: 100px;
width: 100%;
height: 600px;
}
.main .btn{
z-index: 2;
width: 500px;
height: 300px;
position: absolute;
top: 400px;
margin-top:-150px;
right: 50%;
margin-right: -250px;
text-align: center;
}
.main .btn p{
padding-top: 100px;
color: #ffffff;
font-size: 45px;
font-family: "微软雅黑";
font-weight: bold;
}
.main .btn button{
margin-top: 50px;
background-color: #F5704F;
width: 200px;
height: 60px;
color: #ffffff;
font-family: "微软雅黑";
font-size: 14px;
text-align: center;
border-radius: 8px;
}
.main .content{
color: #7c7d7f;
font-size: 20px;
font-weight: bold;
}
.main .content .top{
width: 1000px;
padding-top: 50px;
margin:0 auto;
}
.main .content .top .icon{
float: left;
width: 33.3%;
text-align: center;
}
.main .content .top .icon img{
width:100px;
height:100px;
}
.main .content .top .icon .des{
padding-top: 20px;
}
.main .content .top .recept{
padding-top: 50px;
clear: both;
font-size: 22px;
text-align: center;
color: #E19796;
font-weight: bold;
font-style:italic ;
}
.main .content .top .picAndDes{
padding-top: 50px;
}
.main .content .top .picAndDes .icon2{
float: left;
text-align: center;
padding: 10px;
}
.main .content .top .picAndDes .icon2 .des1{
padding-top: 10px;
font-size: 20px;
font-weight: bold;
color: #7c7d7f;
}
.main .content .top .picAndDes .icon2 .des2{
color: #BDBDBC;
padding-top: 10px;
}
.main .content .top .picAndDes .icon2 img{
width: 310px;
height: 260px;
}
.main .content .bottom {
width: 100%;
padding-bottom: 30px;
background-color: #F9F9F9;
}
.main .content .bottom .bottom-content {
width: 1000px;
margin: 0 auto;
margin-bottom: 50px;
}
.main .content .bottom .bottom-content .title{
text-align: center;
padding-top: 50px;
font-family: "微软雅黑";
padding-bottom: 40px;
font-size: 20px;
}
.main .content .bottom .bottom-content .picContent dl{
width: 470px;
float: left;
margin:10px 12px 10px 12px;
}
.main .content .bottom .bottom-content .picContent dl dd{
padding-top: 20px;
}
.main .content .bottom .bottom-content .picContent dl dt img{
width:470px;
height:480px;
}
.footer{
width: 100%;
height: 100px;
background-color: #292C35;
color: #ffffff;
text-align: center;
line-height: 100px;
font-family: "微软雅黑";
font-size: 15px;
}
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