html { height:100%; width:100%; margin:0; padding:0; overflow:hidden;}
body   { text-align: center; margin: 0 0; padding: 0; position: relative; width: 100%; height: 100%; overflow: hidden }
#main { text-align: center; margin-right: auto; margin-left: auto }
#main_inner { text-align: center; margin-right: auto; margin-left: auto }