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。
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 */
}
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>
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。
