<div id="demo"> <p>aaaa</p> <!--[if lt IE 8]><span></span><![endif]--> </div>

#demo{ height:300px; text-align:center; font-size:0; border:1px solid #000; } #demo:after,#demo span{ display:inline-block; *display:inline; *zoom:1; width:0; height:100%; vertical-align:middle; } #demo:after{ content:''; } #demo p{ display:inline-block; *display:inline; *zoom:1; vertical-align:middle; font-size:16px; }