.drawing-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    -webkit-user-select: none;
       -moz-user-select: none;
            user-select: none;
    
    /* to not interfere with the actual center */
    pointer-events: none;
}

.drawing-container > svg {
    width: 100%;
    height: 100%;
    transform: translate3d(0, 0, 0);
}