body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.wrapper {
    flex: 1;
}

#cell-bg {
    /* Fixes the position of the iframe */
    position: fixed;
    /* Aligns to the top of the viewport */
    top: 0;
    /* Aligns to the left of the viewport */
    left: 0;
    /* Sets width to 100% of the viewport width */
    width: 100vw;
    /* Sets height to 100% of the viewport height */
    height: 100vh;
    /* Removes default border */
    border: none;
    /* Moves behind all other objects */
    z-index: -999;
}

.main {
    width: 100%;
    min-height: 100%;
}

.footer {
    bottom: 0;
}