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body{
margin: 0;
background-color: #1d1e22;
}
#parallax {
position: relative;
width: 100%;
height: 100vh;
background-image: url(https://raw.githubusercontent.com/oscicen/oscicen.github.io/master/img/depth-3.png), url(https://raw.githubusercontent.com/oscicen/oscicen.github.io/master/img/depth-2.png), url(https://raw.githubusercontent.com/oscicen/oscicen.github.io/master/img/depth-1.png);
background-repeat: no-repeat;
background-position: center;
background-position: 50% 50%;
}
h1 {
position: absolute;
top: 47%;
left: 50%;
transform: translate(-50%, -50%);
color: #fff;
font-family: "Arial";
text-transform: uppercase;
opacity: .2;
font-size: 70px;
}