<div id="parent">

<div id="child">Content here</div>

</div>

#parent {display: table;}

#child {

display: table-cell;

vertical-align: middle;

}

/*低版本 IE fix bug*/

#child {

display: inline-block;

}

<div id="parent">

<div id="child">Content here</div>

</div>

#parent {position: relative;}

#child {

position: absolute;

top:;

left:;

height:;

width:;

margin: auto;

}