html, body
{
    margin: 0;
	background: #86cecb; /* miku green */
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#bg
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(0, 1fr));
    place-items: center;

    z-index: 0;
    pointer-events: none;
}

.bg-tile
{
    width: 75%;
    height: 75%;
    object-fit: contain;
}