.worker {
    height: var(--worker-size, 1.5vmin);
    aspect-ratio: 1;
    z-index: 2;
    border-radius: 50%;
    border: 1px solid var(--grey);
    box-shadow: var(--raised-shadow);
    display: grid;
    place-items: center;
}

.worker > .icon {
    height: 90%;
    width: 90%;
}