html, body{
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: #1d1d21;
    overflow: hidden;
}
div{
    width: 100%;
    height: 100%;
    background-image: url('images/charliePuthBoy.png');
    background-position: center;
    background-repeat:  no-repeat;
    background-attachment: fixed;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
}
@media screen and (max-device-width:700px){
    div{
        text-align: center;
        background-size : contain;
        -webkit-background-size: contain;
        -moz-background-size: contain;
        -o-background-size: contain;
    }
}