body{
    background: rgb(0,0,0);
    background: linear-gradient(180deg, rgba(0,0,0,1) 30%, rgba(61,59,54,1) 100%);
}

.Absolute-Center {
    margin: auto;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
}

.Absolute-Center.is-Responsive {
    width: 50%;
    height: 50%;
    min-width: 200px;
    max-width: 400px;
    top: 0; left: 0; bottom: 0; right: 0;
}