* { margin: 0; padding: 0; }
html, body, img, #container {
width: 100%;
height: 100%;
}
body {
overflow: hidden;
}
#container {
position: absolute;
left: 0px;
top: 0px;
z-index: 500;
text-align: center;
}
#play {
visibility: hidden;
display: inline-block;
border-radius: 10px;
position: relative;
-webkit-transform: translateY(50%);
-ms-transform: translateY(50%);
transform: translateY(50%);
background: rgba(0, 0, 0, .5);
color: white;
font-size: 25vw;
}