.playButton {
background-color: #777;
cursor: pointer;
font-weight: bold;
font-size: 1.7em;
opacity: .7;
filter: alpha(opacity=80);
-moz-border-radius: 1em;
-webkit-border-radius: 1em;
position: relative;
top: 46%;
zoom: 100%;
padding: .5em 1em;
color: white;
}

.playBackground {
background-color: rgb(0,0,0);
opacity: 0.0;
filter: alpha(opacity=0);
position: absolute;
top: 0px; left: 0px;
}