三栏布局(两边固定,中间自适应)

百度面试笔试中有一题是写一个三栏布局,两边固定300px,中间自适应。以为自己写对了,回来后上网才知道原来错了撒。

我的答案:

1 <div class="left">1div>
2 <div class="center">2div>
3 <div class="right">3div>
4 <style text="type/css">
5 div{display:inline-block;}
6 .left, .right{ width:300px; background:red;}
7 .center{ width:auto;}
8 style>

 网上答案

http://www.w3cplus.com/css/layout-column-three

主要有定位,浮动和通过margin来控制布局三种方法。同时还给出了一个三栏布局,中间固定,两边自适应的例子。

定位:

 1 <div id="left">左边栏div>
 2 <div id="right">右边栏div>
 3 <div id="main">主内容div>
 4 html,body {
 5 margin:0;
 6 padding:0;
 7 height: 100%;
 8 }
 9 
10 #left,
11 #right {
12 position: absolute;
13 top:0;
14 width: 220px;
15 height: 100%;
16 }
17 
18 #left {
19 left:0;
20 }
21 
22 #right {
23 right:0;
24 }
25 
26 #main {
27 margin: 0 230px;
28 height: 100%;
29 }

浮动:

<div id="left">left div>
<div id="right">rightdiv>
<div id="main">miandiv>
#left,
#right {
float: left;
width: 220px;
height: 200px;
background: blue;
}
        
#right{
float: right;
}
        
#main {
margin: 0 230px;
background: red;
height: 200px;
}

负边距:

 1 <div id="main">
 2 <div id="mainContainer">main contentdiv>
 3 div>
 4 <div id="left">
 5 <div id="leftContainer" class="inner">left contentdiv>
 6 div>
 7 <div id="right">
 8 <div id="rightContainer" class="inner">rightdiv>
 9 div>
10 #main {
11 float: left;
12 width: 100%;
13 }
14 #mainContainer {
15 margin: 0 230px;
16 height: 200px;
17 background: green;
18 }
19 #left {
20 float: left;
21 margin-left: -100%;
22 width: 230px
23 }
24         
25 #right {
26 float: left;
27 margin-left: -230px;
28 width: 230px;
29 }
30         
31 #left .inner,
32 #right .inner {
33 background: orange;
34 margin: 0 10px;
35 height: 200px;
36 }

中间固定,两边自适应:

 1 <div id="left">
 2 <div class="inner">this is left sidebar contentdiv>
 3 div>
 4 <div id="main">
 5 <div class="inner">this is main contentdiv>
 6 div>
 7 <div id="right">
 8 <div class="inner">this is right siderbar contentdiv>
 9 div>
10 #left,
11 #right {
12 float: left;
13 margin: 0 0 0 -271px;
14 width: 50%;
15 }
16 
17 #main {
18 width: 540px;
19 float: left;
20 background: green;
21 }
22     
23 .inner {
24 padding: 20px;
25 }
26     
27 #left .inner,
28 #right .inner {
29 margin: 0 0 0 271px;
30 background: orange;
31 }

这种方法如果在ie下会存在布局混乱的bug,你可以将div#right和div#left中的width值稍作修改:

1 #left,
2 #right {
3 float: left;
4 margin: 0 0 0 -271px;
5 width: 50%;
6 *width: 49.9%;
7 }

CSS3 Flexbox

 1 <div class="grid">
 2   <div class="col fluid">
 3     ...
 4   div>
 5   <div class="col fixed">
 6     ...
 7   div>
 8   <div class="col fluid">
 9     ...
10   div>
11 div>
12 .grid {
13   display: -webkit-flex;
14   display: -moz-flex;
15   display: -o-flex;
16   display: -ms-flex;
17   display: flex;
18 }
19 .col {
20   padding: 30px;
21 }
22 .fluid {
23   flex: 1;
24 }
25 .fixed {
26   width: 400px;
27 }

有关flexbox的内容:

http://www.w3.org/html/ig/zh/wiki/Css3-flexbox/zh-hans

 

转载于:https://www.cnblogs.com/snowinmay/archive/2013/03/22/2976425.html

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