html,body{height:100%;margin:0;background-color:#777}.stage-outer,.stage-inner{width:100%;height:100%}.stage-outer{display:table}.stage-inner{display:table-cell;vertical-align:middle;text-align:center}@media only screen and (min-device-width: 320px) and (max-device-width: 480px){audio{min-height:120px;width:50%;vertical-align:bottom}}