*
{
    margin: 0;
    padding: 0;
}

html,
body
{
    box-sizing: border-box;
}

#layout{
    width: 100%;
    height: 100%;
    z-index: 999;
}

#webgl
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}