body { margin:0; padding:0; background:#373c41 url(/images/bg.png); }
div  { position:absolute; top:50%; width:100%; height:256px; margin:-128px auto 0; background:url(/images/glow.png) no-repeat center; }
a    { display:block; width:247px; height:50px; margin:104px auto 0; background: url(/images/box.png); }