body{
    background:url('images/wall.png');
    font-family:sans-serif;
    text-align:center;item-align:center;vertical-align:center;display:block;height:100%
}

table,td,div {border-radius:0 0 2px 2px}
.piano-octave { border-collapse: collapse; position: relative; background: #000; }
.white-key { width: 40px; height: 150px; background: #fff; border: 1px solid #000; position: relative; }
.black-key { width: 24px; height: 90px; background: #000; position: absolute; right: -13px; top: 0; z-index: 2; }