原理：两个元素都设置dislpay:inline-block，为了消除html空格的影响，父元素的font-size需要设置为0，右侧自适应元素的宽度使用calc函数计算。如果两个元素的高度不一样，可以给元素设置vertical-align:top调整。
缺点：由于父元素设置了font-size为0，子元素内文字不会显示
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
font-size:0;
}
.left{
display: inline-block;
width: 100px;
height: 200px;
background-color: red;
vertical-align: top;
}
.right{
display: inline-block;
width: calc(100% - 100px);
height: 400px;
background-color: blue;
vertical-align: top;
}
</style>
</head>
<body>
<div class="box">
<div class="left">
<span>1234</span>
</div>
<div class="right">
<span>1234</span>
</div>
</div>
</body>
</html>
2.双浮动
原理：两个元素设置浮动，右侧自适应元素宽度使用calc函数计算
缺点：父元素需要清除浮动
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
}
.left{
float: left;
width: 100px;
height: 200px;
background-color: red;
}
.right{
float: left;
width: calc(100% - 100px);
height: 400px;
background-color: blue;
}
</style>
</head>
<body>
<div class="box">
<div class="left">
<span>
123adadadddddddddddddddddddddddddddddddddddddddd
</span>
</div>
<div class="right"></div>
</div>
</body>
</html>
3.浮动+margin
原理：左侧定宽元素浮动，右侧自适应元素设置margin-left的值大于定宽元素的宽度即可
缺点：父元素需要清除浮动
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
}
.left{
float: left;
width: 100px;
height: 200px;
background-color: red;
}
.right{
margin-left: 100px;
height: 400px;
background-color: blue;
}
</style>
</head>
<body>
<div class="box">
<div class="left">
<p>1234</p>
</div>
<div class="right">
<p>1234</p>
</div>
</div>
</body>
</html>
4.浮动+BFC
原理：父元素设置overflow:hidden,左侧定宽元素浮动，右侧自适应元素设置overflow:auto创建BFC
缺点：左侧元素的内容如果超过设定宽度会重叠到右侧元素上
1
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
overflow: hidden;
}
.left{
float: left;
width: 100px;
height: 200px;
background-color: red;
}
.right{
overflow: auto;
height: 400px;
background-color: blue;
}
</style>
</head>
<body>
<div class="box">
<div class="left">111111111111111111111111</div>
<div class="right">111111111111111111111111111111111111111111111</div>
</div>
<div class="right"></div>
</body>
</html>
5.absolute+margin-left
原理：父元素相对定位，左侧元素绝对定位，右侧自适应元素设置margin-left的值大于定宽元素的宽度
缺点：父元素设置了相对定位
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
position: relative;
}
.left{
position: absolute;
width: 100px;
height: 200px;
background-color: red;
}
.right{
margin-left: 100px;
height: 400px;
background-color: blue;
}
</style>
</head>
<body>
<div class="box">
<div class="left"></div>
<div class="right"></div>
</div>
</body>
</html>
6.flex布局
原理：父元素设置display：flex，自适应元素设置flex：1
缺点：存在兼容性问题，IE10以下不支持
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
padding: 0;
margin: 0;
}
.box{
height: 600px;
width: 100%;
display: flex;
}
.left{
width: 100px;
height: 200px;
background-color: red;
}
.right{
flex: 1;
height: 400px;
background-color: blue;
}
</style>
</head>
<body>
<div class="box">
<div class="left"></div>
<div class="right"></div>
</div>
</body>
</html>
亚马逊测评 www.yisuping.com
