一、左右布局，左侧div绝对定位，外div相对定位
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<style type="text/css">
*{margin:0;padding: 0;}
.container{
width: 1000px;
margin:0 auto;
background: #c6c;
position: relative;
}
.side{
width: 200px;
background: #c66;
height: 100%;
position: absolute;
top:0;
left: 0;
}
.content p{padding-left: 210px;color: #fff;}
</style>
<body>
<div class="container">
<div class="side">side</div>
<div class="content">
<p>驿外断桥边，</p>
<p>寂寞开无主。</p>
<p>已是黄昏独自愁，</p>
<p>更著风和雨。</p>
<p>无意苦争春，</p>
<p>一任群芳妒。</p>
<p>零落成泥碾作尘，</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
</div>
</div>
</body>
</html>
2.左侧div左浮动，右div加背景
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<style type="text/css">
*{margin:0;padding: 0;}
.container{
width: 1000px;
margin:0 auto;
background: #c6c;
overflow: hidden;
}
.side{
width: 200px;
float: left;
}
.content{background: #6c6;margin-left: 200px;}
.content p{color: #fff;padding-left: 10px;}
</style>
<body>
<div class="container">
<div class="side">side</div>
<div class="content">
<p>驿外断桥边，</p>
<p>寂寞开无主。</p>
<p>已是黄昏独自愁，</p>
<p>更著风和雨。</p>
<p>无意苦争春，</p>
<p>一任群芳妒。</p>
<p>零落成泥碾作尘，</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
</div>
</div>
</body>
</html>
3.通过padding正值，margin负值实现，参考别人的代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<style type="text/css">
*{margin:0;padding: 0;}
.container{
width: 1000px;
margin:0 auto;
overflow: hidden;
}
.side{
width: 200px;
background: #c66;
float: left;
padding-bottom:2000px;
margin-bottom: -2000px;
}
.content{
margin-left: 200px;
background:#c6c;
padding-bottom:2000px;
margin-bottom: -2000px;
}
.content p{color: #fff;padding-left: 10px;}
</style>
<body>
<div class="container">
<div class="side">side</div>
<div class="content">
<p>驿外断桥边，</p>
<p>寂寞开无主。</p>
<p>已是黄昏独自愁，</p>
<p>更著风和雨。</p>
<p>无意苦争春，</p>
<p>一任群芳妒。</p>
<p>零落成泥碾作尘，</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
</div>
</div>
</body>
</html>
4.通过左浮动和margin-left负值来实现，参考别人的代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS特效-两列等高布局效果</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<style type="text/css">
*{margin:0;padding:0}
html{overflow-y:scroll}
body{font-size:12px;background:#fff;color:#333}
ul,ol{list-style:none}
a{text-decoration:none;color:#f30}
img{border:none}
.clearfix{zoom:1}
.clearfix:after{content:"";display:block;height:0;line-height:0;font-size:0;visibility:hidden;clear:both}
.ct_wrap{width:950px;margin:0 auto;zoom:1;background:#e0e0e0;}
.content{margin-left:150px;background: #c66;}
.main_col{float:left;width:100%;word-wrap:break-word}
.side_col{float:left;width:150px;margin-left:-950px;position:relative;word-wrap:break-word} </style>
</head>
<body> <div class="ct_wrap">
<div class="content clearfix">
<div class="main_col">
<p>驿外断桥边，</p>
<p>寂寞开无主。</p>
<p>已是黄昏独自愁，</p>
<p>更著风和雨。</p>
<p>无意苦争春，</p>
<p>一任群芳妒。</p>
<p>零落成泥碾作尘，</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
<p>只有香如故。</p>
</div>
<div class="side_col">我可以有背景色</div>
</div>
</div>
</body>
</html>