html, body {
    margin: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.no-select {
    user-select: none;
    -moz-user-select: none;
    -khtml-user-select: none;
    -webkit-user-select: none;
    -o-user-select: none;
}

.container {
    background-size: contain;
    width: 100vmin;
    height: 100vmin;
    will-change: opacity;
    cursor: pointer;
}