.box {
    /* aspect-ratio: 1; */
    background-color: white;
    padding: 1em;
    text-align: center;
    position: absolute;
    transform-origin: 50% 50%;
}

body {
    overflow: hidden;
    background-color: aliceblue;
}

#pointer {
    width: 30px;
    height: 30px;

    position: absolute;

    transform: translate(-50%, -50%);
    
    border-radius: 100%;
}