body {
    background-color: black;
    width: 100vw;
    height: 100vh;
}

.planet {
    position: absolute;
    border-radius: 50%;
    background-color: white;
    place-content: center;
    overflow: visible;
    transition: all 1s;
}

.planet-name {
    margin-top: 100%;
    color: white;
}