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?
浮动一个或两个内部div。
浮动一个div:
#wrapper {
width: 500px;
border: 1px solid black;
overflow: hidden; /* will contain if #first is longer than #second */
}
#first {
width: 300px;
float:left; /* add this */
border: 1px solid red;
}
#second {
border: 1px solid green;
overflow: hidden; /* if you don't want #second to wrap below #first */
}
或者如果你浮动两个，你需要鼓励包装器div包含两个浮动的子元素，否则它会认为它是空的，不会在它们周围设置边框
浮动两个div:
#wrapper {
width: 500px;
border: 1px solid black;
overflow: hidden; /* add this to contain floated children */
}
#first {
width: 300px;
float:left; /* add this */
border: 1px solid red;
}
#second {
border: 1px solid green;
float: left; /* add this */
}
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。
这是正确的CSS3答案。希望这能对你有所帮助
我真的很推荐你去看这本书:https://www.amazon.com/Book-CSS3-Developers-Future-Design/dp/1593272863其实我现在已经通过看这本书做出了这个解决方案。: D
#wrapper{
display: flex;
flex-direction: row;
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>
