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目录
[1]float [2]inline-block [3]table[4]flex
前面的话
等分布局是指子元素平均分配父元素宽度的布局方式,本文将介绍实现等分布局的4种方式
思路一: float
缺点:结构和样式存在耦合性,IE7-浏览器下对宽度百分比取值存在四舍五入的误差
【1】float + padding + background-clip
使用padding来实现子元素之间的间距,使用background-clip使子元素padding部分不显示背景
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ margin-right: -20px; overflow: hidden; } .child{ float: left; height: 100px; width: 25%; padding-right: 20px; box-sizing: border-box; background-clip: content-box; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: lightblue;">1</div> <div class="child" style="background-color: lightgreen;">2</div> <div class="child" style="background-color: lightsalmon;">3</div> <div class="child" style="background-color: pink;">4</div> </div> </div>
【2】float + margin + calc
使用margin实现子元素之间的间距,使用calc()函数计算子元素的宽度
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ overflow: hidden; margin-right: -20px; } .child{ float: left; height: 100px; width: calc(25% - 20px); margin-right: 20px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: lightblue;">1</div> <div class="child" style="background-color: lightgreen;">2</div> <div class="child" style="background-color: lightsalmon;">3</div> <div class="child" style="background-color: pink;">4</div> </div> </div>
【3】float + margin + (fix)
使用margin实现子元素之间的间距,通过增加结构来实现兼容
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ overflow: hidden; margin-right: -20px; } .child{ float: left; width: 25%; } .in{ margin-right: 20px; height: 100px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: blue;"> <div class="in" style="background-color: lightblue;">1</div> </div> <div class="child" style="background-color: green;"> <div class="in" style="background-color: lightgreen;">2</div> </div> <div class="child" style="background-color: orange;"> <div class="in" style="background-color: lightsalmon;">3</div> </div> <div class="child" style="background-color: red;"> <div class="in" style="background-color: pink;">4</div> </div> </div> </div>
思路二: inline-block
缺点:需要设置垂直对齐方式vertical-align,则需要处理换行符解析成空格的间隙问题。IE7-浏览器不支持给块级元素设置inline-block属性,兼容代码是display:inline;zoom:1;
【1】inline-block + padding + background-clip
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ font-size: 0; margin-right: -20px; overflow: hidden; } .child{ display:inline-block; vertical-align: top; width: 25%; padding-right: 20px; box-sizing: border-box; background-clip: content-box; font-size: 16px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: lightblue;">1</div> <div class="child" style="background-color: lightgreen;">2</div> <div class="child" style="background-color: lightsalmon;">3</div> <div class="child" style="background-color: pink;">4</div> </div> </div>
【2】inline-block + margin + calc
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ margin-right: -20px; font-size: 0; } .child{ display: inline-block; vertical-align: top; font-size: 16px; height: 100px; width: calc(25% - 20px); margin-right: 20px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: lightblue;">1</div> <div class="child" style="background-color: lightgreen;">2</div> <div class="child" style="background-color: lightsalmon;">3</div> <div class="child" style="background-color: pink;">4</div> </div> </div>
【3】inline-block + margin + (fix)
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ margin-right: -20px; font-size: 0; } .child{ display: inline-block; vertical-align: top; font-size: 16px; width: 25%; } .in{ margin-right: 20px; height: 100px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: blue;"> <div class="in" style="background-color: lightblue;">1</div> </div> <div class="child" style="background-color: green;"> <div class="in" style="background-color: lightgreen;">2</div> </div> <div class="child" style="background-color: orange;"> <div class="in" style="background-color: lightsalmon;">3</div> </div> <div class="child" style="background-color: red;"> <div class="in" style="background-color: pink;">4</div> </div> </div> </div>
思路三: table
缺点:元素被设置为table后,内容撑开宽度。若要兼容IE7-浏览器,需要改为<table>结构。table-cell元素无法设置margin,设置padding及background-clip也不可行
【1】table + margin负值
<style> body,p{margin: 0;} .parentWrap{ overflow: hidden; } .parent{ display: table; width: calc(100% + 20px); table-layout: fixed; } .child{ display: table-cell; height: 100px; padding-right: 20px; } </style>
<div class="parentWrap"> <div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: blue;"> <div class="in" style="background-color: lightblue;">1</div> </div> <div class="child" style="background-color: green;"> <div class="in" style="background-color: lightgreen;">2</div> </div> <div class="child" style="background-color: orange;"> <div class="in" style="background-color: lightsalmon;">3</div> </div> <div class="child" style="background-color: red;"> <div class="in" style="background-color: pink;">4</div> </div> </div> </div>
【2】table + 兄弟选择器
<style> body,p{margin: 0;} .parent{ display: table; width: 100%; table-layout: fixed; } .child{ display: table-cell; height: 100px; } .child + .child{ padding-left: 20px; } </style>
<div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: blue;"> <div class="in" style="background-color: lightblue;">1</div> </div> <div class="child" style="background-color: green;"> <div class="in" style="background-color: lightgreen;">2</div> </div> <div class="child" style="background-color: orange;"> <div class="in" style="background-color: lightsalmon;">3</div> </div> <div class="child" style="background-color: red;"> <div class="in" style="background-color: pink;">4</div> </div> </div>
思路四: flex
<style> body,p{margin: 0;} .parent{ display: flex; } .child{ flex:1; height: 100px; } .child + .child{ margin-left: 20px; } </style>
<div class="parent" style="background-color: lightgrey;"> <div class="child" style="background-color: lightblue;">1</div> <div class="child" style="background-color: lightgreen;">2</div> <div class="child" style="background-color: lightsalmon;">3</div> <div class="child" style="background-color: pink;">4</div> </div>
时间: 2024-10-29 19:06:20