.bubble-animation {
    position: absolute;
    top: 0;
    left: 0;
    /* Positioned via transform */
    border-radius: 50%;
    background-color: #EDEEF5;
    z-index: -1;
    /* Behind content */
    pointer-events: none;
    /* Let clicks pass through */
    opacity: 0.8;
    will-change: transform, width, height;
}