* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: #000000;
}

.full-screen-3d-example {
    opacity: 0;
    transition: opacity 1s ease-out;
}

.full-screen-3d-example.-loaded {
    opacity: 1;
}