body {
    background-color: black;
    margin: 0;
}

html, body {
    height: 100%;
}

p {
    color: white;
}

#main {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    flex-direction: column;
}

button {
    margin: 10px
}

#saturn {
    position: fixed;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
}