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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:lightblue;">1</div>
- <divclass="child"style="background-color:lightgreen;">2</div>
- <divclass="child"style="background-color:lightsalmon;">3</div>
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:lightblue;">1</div>
- <divclass="child"style="background-color:lightgreen;">2</div>
- <divclass="child"style="background-color:lightsalmon;">3</div>
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:blue;">
- <divclass="in"style="background-color:lightblue;">1</div>
- </div>
- <divclass="child"style="background-color:green;">
- <divclass="in"style="background-color:lightgreen;">2</div>
- </div>
- <divclass="child"style="background-color:orange;">
- <divclass="in"style="background-color:lightsalmon;">3</div>
- </div>
- <divclass="child"style="background-color:red;">
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:lightblue;">1</div>
- <divclass="child"style="background-color:lightgreen;">2</div>
- <divclass="child"style="background-color:lightsalmon;">3</div>
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:lightblue;">1</div>
- <divclass="child"style="background-color:lightgreen;">2</div>
- <divclass="child"style="background-color:lightsalmon;">3</div>
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:blue;">
- <divclass="in"style="background-color:lightblue;">1</div>
- </div>
- <divclass="child"style="background-color:green;">
- <divclass="in"style="background-color:lightgreen;">2</div>
- </div>
- <divclass="child"style="background-color:orange;">
- <divclass="in"style="background-color:lightsalmon;">3</div>
- </div>
- <divclass="child"style="background-color:red;">
- <divclass="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>
- <divclass="parentWrap">
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:blue;">
- <divclass="in"style="background-color:lightblue;">1</div>
- </div>
- <divclass="child"style="background-color:green;">
- <divclass="in"style="background-color:lightgreen;">2</div>
- </div>
- <divclass="child"style="background-color:orange;">
- <divclass="in"style="background-color:lightsalmon;">3</div>
- </div>
- <divclass="child"style="background-color:red;">
- <divclass="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>
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:blue;">
- <divclass="in"style="background-color:lightblue;">1</div>
- </div>
- <divclass="child"style="background-color:green;">
- <divclass="in"style="background-color:lightgreen;">2</div>
- </div>
- <divclass="child"style="background-color:orange;">
- <divclass="in"style="background-color:lightsalmon;">3</div>
- </div>
- <divclass="child"style="background-color:red;">
- <divclass="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>
- <divclass="parent"style="background-color:lightgrey;">
- <divclass="child"style="background-color:lightblue;">1</div>
- <divclass="child"style="background-color:lightgreen;">2</div>
- <divclass="child"style="background-color:lightsalmon;">3</div>
- <divclass="child"style="background-color:pink;">4</div>
- </div>
以上就是本文的全部内容,希望对大家的学习有所帮助。
本文链接:http://www.cnblogs.com/xiaohuochai/p/5456695.html