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一、css实现左侧宽度固定右侧宽度自适应

1、定位

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>自适应</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        .left{
            background: red;
            width: 200px;
            height: 200px;
            position: absolute;/*定位*/
            left: 0;
            top:0;
        }
        .right{
            background: blue;
            height: 200px;
            margin-left: 210px;
        }
    </style>
</head>
<body>
    <div class="left">
        定宽
    </div>
    <div class="right">
        自适应
</div>
</body>
</html>

2、浮动

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>自适应</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        .left{
            background: red;
            width: 200px;
            height: 200px;
            float: left;/*浮动*/
        }
        .right{
            background: blue;
            height: 200px;
            margin-left: 210px;
        }
    </style>
</head>
<body>
    <div class="left">
        定宽
    </div>
    <div class="right">
        自适应
</div>
</body>
</html>

3、margin

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>自适应</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        .left{
            background: red;
            width: 200px;
            height: 200px;
        }
        .right{
            background: blue;
            height: 200px;
            margin-top: -200px;/*margin*/
            margin-left: 210px;
        }
    </style>
</head>
<body>
    <div class="left">
        定宽
    </div>
    <div class="right">
        自适应
</div>
</body>
</html>

二、css3弹性盒模型实现自适应

1、上下高度固定中间高度自适应

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        body,html{
            height: 100%;
        }
        #contain{
            display: flex;
            flex-direction: column;/*列  垂直方向*/
            height: 100%;/*全屏效果  该元素及其父元素及html、body height:100%*/
        }
        #top{
           height: 200px;
            background: red;
        }
        #center {
            flex: 1;
            background: blue;
        }
        #bottom{
            height: 100px;
            background: green;
        }
    </style>
 
</head>
<body>
<div id="contain">
    <div id="top">你好</div>
    <div id="center">你好</div>
    <div id="bottom">你也好</div>
</div>
</body>
</html>

2、左侧宽度固定右侧宽度自适应
 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
 
        #contain {
            display: flex; /*父元素设置该属性*/
        }
 
        #left {
            width: 100px;
            height: 200px;
            background: #fff8a8;
            margin-right: 10px;
        }
 
        #right {
            flex: 1; /*所占比例/份数*/
            height: 200px;
            background: #ff9bad;
        }
    </style>
</head>
<body>
<div id="contain">
    <div id="left"></div>
    <div id="right"></div>
</div>
</body>
</html>

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。

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