CSS三列布局 - 小火柴的蓝色理想
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2022-05-04 07:56:15
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前面的话
前面已经介绍过单列定宽单列自适应和两列自适应的两列布局。本文介绍三列布局,分为两侧定宽中间自适应、两列定宽一侧自适应、中间定宽两侧自适应、一侧定宽两列自适应和三列自适应这五种情况
两侧定宽中间自适应布局
思路一: float
【1】float + margin + calc
style>
p{margin: 0;}
.parent{overflow: hidden;}
.left,.right{float: left;width: 100px;}
.center{float: left; width:calc(100% - 240px);margin: 0 20px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
【2】float + margin + (fix)
style>
p{margin: 0;}
.parent{overflow: hidden;}
.left,.right{position: relative;float: left;width: 100px;}
.centerWrap{float: left; width:100%; margin: 0 -100px;}
.center{margin: 0 120px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="centerWrap" style="background-color: red;">
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
思路二: inline-block
【1】inline-block + margin + calc
style>
p{margin: 0;}
.parent{font-size: 0;}
.left,.right,.center{display:inline-block; vertical-align: top;font-size: 16px;}
.left,.right{width: 100px;}
.center{width: calc(100% - 240px); margin: 0 20px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
【2】inline-block + margin + (fix)
style>
p{margin: 0;}
.parent{font-size: 0;}
.left,.right,.centerWrap{display:inline-block; vertical-align: top;font-size: 16px;}
.left,.right{width: 100px;position:relative;}
.centerWrap{width: 100%; margin: 0 -100px;}
.center{margin: 0 120px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="centerWrap" style="background-color: orange;">
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
思路三: table
style>
p{margin: 0;}
.parent{display: table; width: 100%;table-layout: fixed;}
.left,.right,.centerWrap{display:table-cell;}
.left,.right{width: 100px;}
.center{margin: 0 20px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="centerWrap" style="background-color: orange;">
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
思路四: absolute
style>
p{margin: 0;}
.parent{position: relative;height:40px;}
.left,.right,.center{position: absolute;}
.left{left: 0;width:100px;}
.right{right: 0;width: 100px;}
.center{left: 120px; right: 120px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
思路五: flex
style>
p{margin: 0;}
.parent{display: flex;}
.left,.right{width: 100px;}
.center{flex: 1; margin: 0 20px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
div>
div>
两列定宽一侧自适应布局
这种布局与单列定宽单列自适应布局非常相似
思路一: float
【1】float + margin
缺点是IE6-浏览器的3px的bug,以及当自适应列中有元素清除浮动时,会使该元素不与左侧浮动元素同行,从而出现文字下沉现象
style>
p{margin: 0;}
.parent{overflow: hidden;}
.left,.center{float: left;width: 100px;margin-right: 20px;}
.right{margin-left: 240px;}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
p>rightp>
div>
div>
【2】float + margin + calc
style>
p{margin: 0;}
.parent{overflow: hidden;}
.left,.center{float: left;width: 100px;margin-right: 20px;}
.right{float: left; width: calc(100% - 240px);}
style>
div class="parent" style="background-color: lightgrey;">
div class="left" style="background-color: lightblue;">
p>leftp>
div>
div class="center" style="background-color: pink;">
p>centerp>
div>
div class="right" style="background-color: lightgreen;">
p>rightp>
p>rightp>
div>
div>
【3】float + margin + (fix)
style>
p{margin: 0;}
.parent{overflow: hidden;}
.left,.center{position: relative; float: left;width: 100px;margin-right: 20px;}
.rightWrap{float: left; width: 100%; margin-left: -240px;}
.right{margin-left:微信分享
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