把HTML标签设置成水平或垂直居中的二种方案除IE6外都兼容

<style>
/* HTML标签CSS修饰 */
div,img,p,ul,ol,dl,li,dt,dd,h1,h2,h3,h4,h5,h6,span,p,a,sub,sup,strong,em,label,header,footer,nav,menu,aside,figure,figcaption,section,article,time,address,hgroup{margin:0px;padding:0px;}div,img,p,ul,ol,dl,li,d