<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>百度一下,你就知道</title>
<link href="css/index.css" rel="stylesheet">
</head>
<body>
<!--头部-->
<div id="header">
<!--javascript:void(0)-->
<a href="#">新闻</a>
<a href="#">hao123</a>
<a href="#">地图</a>
<a href="#">视频</a>
<a href="#">贴吧</a>
<a href="#">登录</a>
<a href="#">设置</a>
<a href="#" class="more-product">更多产品</a>
</div>
<!--主要内容-->
<div id="content">
<!--中间的logo图片-->
<div class="logo">
<img src="images/logo_white_ee663702.png">
</div>
<!--中间的搜索(搜索框和按钮)-->
<div class="search">
<input type="text" value="">
<a href="#">百度一下</a>
</div>
<!--中间下面的图片-->
<div class="dom">
<img src="images/d_1.png">
<img src="images/d_2.png">
<img src="images/d_3.png">
<img src="images/d_4.png">
</div>
<!--中间下面的图片-->
<div class="dom">
<img src="images/d_5.png">
<img src="images/d_6.png">
<img src="images/d_7.png">
<img src="images/d_8.png">
</div>
</div>
<!--尾部-->
<div id="footer">
<p class="footer-top">
<a href="#">把百度设为主页</a>
<a href="#">关于百度 </a>
<a href="#">About Baidu</a>
</p>
<p class="footer-bottom">
©2015 Baidu <a href="#">使用百度前必读</a> 意见反馈 京ICP证030173号
<img src="images/copy_rignt_24.png">
</p>
</div>
</body>
</html>
a, address, b, big, blockquote, body, center, cite, code, dd, del, div, dl, dt, em, fieldset, font, form, h1, h2, h3, h4, h5, h6, html, i, iframe, img, ins, label, legend, li, ol, p, pre, small, span, strong, u, ul, var{
padding: 0;
margin: 0;
}
/*全局设置a标签的颜色*/
a{
color: black;
}
body{
/*设置整个页面的字体大小都是13px*/
font-size: 13px;
/*背景图片*/
background: url("../images/bg.jpg");
}
/*头部*/
#header{
/*设置透明度*/
background-color: rgba(0, 0, 0, 0.2);
text-align: right;
/*外边距:上-右-下-左*/
margin: 0px 0px 30px 0;
height: 38px;
line-height: 38px;
}
#header a{
color: white;
margin-right: 7px;
font-size: 15px;
font-weight: bolder;
}
/*特殊的样式,可以单独设置一个类特殊设置*/
#header a.more-product{
/*让行内标签---->行内-块级标签,就可以改变尺寸*/
display: inline-block;
background-color: #3385ff;
color: white;
width: 80px;
text-align: center;
height: 28px;
line-height: 28px;
text-decoration: none;
font-weight: normal;
}
/*主要内容*/
#content{
/*background-color: green;*/
}
/*设置搜索框外部的div的宽度,可以让其水平居中*/
#content .search{
/*background-color: blue;*/
width: 600px;
height: 33px;
/*居中*/
margin: 0 auto;
}
#content .search input{
width: 500px;
height: 33px;
padding: 5px;
/*让内边距向内,伸缩,会占用内容的尺寸*/
box-sizing: border-box;
border: 1px solid #ddd;
}
/*伪类:获得焦点的时候调用*/
#content .search input:focus{
/*去除外边框*/
outline: none;
border:1px solid #3385ff;
}
#content .search{
margin-bottom: 40px;
}
/*让a标签右浮动,只要设置了输入框的border之后,两个宽度加起来正好*/
#content .search a{
display: inline-block;
background-color: #3385ff;
color: white;
width: 100px;
text-align: center;
height: 33px;
/*设置垂直居中*/
line-height: 33px;
/*去除下划线*/
text-decoration: none;
font-weight: normal;
float: right;
}
#content .logo{
text-align: center;
}
#content .logo img{
width: 270px;
height: 129px;
}
#content .dom{
text-align: center;
}
#content .dom img{
width: 150px;
margin: 5px;
}
#content .dom img:hover{
/*不透明度*/
opacity: 0.7;
}
/*尾部*/
#footer{
margin-top: 120px;
/*background-color: yellow;*/
text-align: center;
}
#footer p{
margin-top: 10px;
}
#footer p a{
color: blue;
}
#footer p.footer-top a{
margin: 0 5px;
}
![](https://images2015.cnblogs.com/blog/679636/201705/679636-20170530140353321-1588383289.png)