Several methods for centering DIV_html/css_WEB-ITnose

1.

1 body{  2 text-align:center;  3 } 

Disadvantage: All content in the body is centered

2.

.center{position: fixed;left: 50%;}

Disadvantages: Need to set the position attribute, which can easily disrupt the page layout when the web page is complex, and only the starting position of the element is centered

3 .

1 .center{2 width:500px;3 margin: 0 auto;4 }

Disadvantage: need to set div width

4.

1 .center {  2   display: -webkit-flex;  3   -webkit-justify-content: center;  4   -webkit-align-items: center;  5  }  

Disadvantage: need to support Html5

5.

1     .center {2         position: absolute;3         top: 50%;4         left: 50%;5         -ms-transform: translate(-50%,-50%);6         -moz-transform: translate(-50%,-50%);7         -o-transform: translate(-50%,-50%);8         transform: translate(-50%,-50%); 9     }

Disadvantages: Need to support Html5

6.