CSS样式-在导航栏均分四块
<!DOCTYPE html>
<html lang="en">
<head>
<style type="text/css">
body,
div,
ul,
li {
margin: 0;
padding: 0;
}
#header,
#nav,
#content-main,
#content-2,
#content-3,
#content-4,
#content-5,
#content-6,
#footer {
width: 960px;
background-color: #eee;
border: 1px dashed #ccc;
margin: 0 auto;
height: 500px;
margin-bottom: 5px;
}
#header,
#header>.inner {
height: 120px;
border-width: 0;
}
#header {
width: 100%;
}
#header>.inner {
width: 960px;
margin: 0 auto;
}
#nav {
height: 80px;
}
#nav li {
list-style: none;
width: 232px;
/*高度不能继承*/
height: 80px;
float: left;
margin-right: 10px;
}
/*这里的nth-child表示第几个li*/
#nav li:nth-child(1) {
background-color: #f00;
}
#nav li:nth-child(2) {
background-color: #0f0;
margin-right: 11px;
}
#nav li:nth-child(3) {
background-color: #00f;
}
#nav li:nth-child(4) {
/*最后一个右浮动*/
float: right;
background-color: #0ff;
/*最后一个不需要设置margin-right*/
margin-right: 0;
}
/* 块的宽度,margin的宽度:
1.求块的宽度:(总宽度 - margin的宽度 * (n-1))/ n 向下取整
n * 块宽度 + (n - 1)* margin的宽度 < 总宽度: 有一个差
2.求出差
3.最后一个块设置成float right
有一个问题,就是最后一个块和倒数第二个块之间的margin = margin + 差,且这个差小于n
4.调整一部分块的margin-right + 1
*/
#content-main>.left,
#content-main>.right {
height: 500px;
/* #f00;
border: 1px solid #000; */
float: left;
}
#content-main>.left {
width: 318px;
}
#content-main>.right {
width: 628px;
float: right;
}
#footer,
#footer>.inner {
height: 100px;
border-width: 0;
}
#footer {
width: 100%;
margin-bottom: 0;
}
#footer>.inner {
width: 960px;
margin: 0 auto;
}
</style>
</head>
<body>
<div id="header">
<div class="inner">header-inner</div>
</div>
<div id="nav">
<!-- 通过li均分4块 -->
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</div>
<div id="content-main">
<div class="left">left</div>
<div class="right">right</div>
</div>
<div id="content-2">content-2</div>
<div id="content-3">content-3</div>
<div id="content-4">content-4</div>
<div id="content-5">content-5</div>
<div id="content-6">content-6</div>
<div id="footer">
<div class="inner">footer-inner</div>
</div>
</body>
</html>