考虑下面的代码:
#wrapper {
width: 500px;
border: 1px solid black;
}
#first {
width: 300px;
border: 1px solid red;
}
#second {
border: 1px solid green;
}
<div id="wrapper">
<div id="first">Stack Overflow is for professional and enthusiast programmers, people who write code because they love it.</div>
<div id="second">When you post a new question, other users will almost immediately see it and try to provide good answers. This often happens in a matter of minutes, so be sure to check back frequently when your question is still new for the best response.</div>
</div>
我希望这两个div在包装器div中彼此相邻。在这种情况下，绿色div的高度应该决定包装器的高度。
我如何通过CSS实现这一点?
这很简单
你可以来点硬的
.clearfix:after {
content: " ";
visibility: hidden;
display: block;
height: 0;
clear: both;
}
#first, #second{
box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
}
#wrapper {
width: 500px;
border: 1px solid black;
}
#first {
border: 1px solid red;
float:left;
width:50%;
}
#second {
border: 1px solid green;
float:left;
width:50%;
}
<div id="first">Stack Overflow is for professional and enthusiast programmers, people who write code because they love it.</div>
<div id="second">When you post a new question, other users will almost immediately see it and try to provide good answers. This often happens in a matter of minutes, so be sure to check back frequently when your question is still new for the best response.</div>
</div>
or the easy way
#wrapper {
display: flex;
border: 1px solid black;
}
#first {
border: 1px solid red;
}
#second {
border: 1px solid green;
}
<div id="wrapper">
<div id="first">Stack Overflow is for professional and enthusiast programmers, people who write code because they love it.</div>
<div id="second">When you post a new question, other users will almost immediately see it and try to provide good answers. This often happens in a matter of minutes, so be sure to check back frequently when your question is still new for the best response.</div>
</div>
还有很多其他的方法。
但我要用简单的方法。
我还想告诉你，这里有很多答案是不正确的
但我所展示的两种方法至少在HTML 5中都有效。
有两个div，你也可以使用display属性:
#包装{
边框:1px纯蓝色;
｝
# div1 {
显示:inline-block;
宽度:120 px;
身高:120 px;
边框:1px纯红色;
｝
# div2 {
显示:inline-block;
宽度:160 px;
身高:160 px;
边框:1px纯绿色;
｝
< div id = "包装" >
<div id="div1">这两个div是</div>
<div id="div2">相邻
< / div >
如果div1超过了一定的高度，则div2将被放置在底部的div1旁边。要解决这个问题，请使用vertical-align:top;div2。
#包装{
边框:1px纯蓝色;
｝
# div1 {
显示:inline-block;
宽度:120 px;
身高:120 px;
边框:1px纯红色;
｝
# div2 {
vertical-align:最高;
显示:inline-block;
宽度:160 px;
身高:160 px;
边框:1px纯绿色;
｝
< div id = "包装" >
< div id = " div1 " >两个div < br / > < br / > < br / > < br / > < br / > < br / > < / div >
<div id="div2">相邻
< / div >
jsFiddle为例1。
jsFiddle为例2。
