html {
    height: 100%;
}

body {
    height: 100%;
    margin: 0px;
    padding: 0px;
}

#canvas {
    /* use a flex instead */
    height: 100%;
    background-color: #e0e0e0;
}

svg {
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    position: absolute;
}

/* Coloring of faces */

.front {
    fill: white;
}

.back {
    fill: red;
}

.right {
    fill: green;
}

.left {
    fill: blue;
}

.top {
    fill: yellow;
}

.bottom {
    fill: #660f99;
}

.hidden {
    display: none;
}