html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

svg {
    display: block;
    width: 100%;
    height: 100%;
}

.Background
{
    background-image: linear-gradient(to top left, #161b22, #0d1117);
    background-image: -o-linear-gradient(to top left, #161b22, #0d1117);
    background-image: -moz-linear-gradient(to top left, #161b22, #0d1117);
    background-image: -webkit-linear-gradient(to top left, #161b22, #0d1117);
    background-image: -ms-linear-gradient(to top left, #161b22, #0d1117);

    background-image: -webkit-gradient(
        linear,
        right bottom,
        left top,
        color-stop(0.0, #161b22),
        color-stop(1.0, #0d1117)
    );   
}