html5 - html怎么让div居中啊？？

Answer 1

I didn’t read your code.
But there are many ways to center the fast element:
1: display:inline-block
<style>

.total{width:1000px;height:auto;border:1px solid #ccc;text-align:center;}
.center{width:200px;height:50px;background-color:blue;display:inline-block;}

</style>
<p class='total'>

<p class='center'></p>

</p>

2: Unknown width and height: position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
<style>

.total{width:1000px;height:auto;border:1px solid #ccc;}
.center{width:200px;height:50px;background-color:blue;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);}

</style>
<p class='total'>

<p class='center'></p>

</p>

2: Known width and height: width:200px;height:200px;position:absolute;left:50%;top:50%;transform:translate(-100px,-100px);
<style>

.total{width:1000px;height:auto;border:1px solid #ccc;}
.center{width:200px;height:50px;background-color:blue;position:absolute;left:50%;top:50%;transform:translate(-100px,-100px)}

</style>
<p class='total'>

<p class='center'></p>

</p>

The above code has not been tested, if you have any questions please ask

Answer 2

Infelx plus justify plus align are not easy to use, but remember to be compatible

Answer 3

margin:0 auto

Answer 4

http://jackzong.github.io/201...