.return-to-main-button-0 {
    position: fixed;
    left: 92vw;
    font-family: Bahnschrift, sans-serif;
    color: white;
    border: 2px solid white;
    font-size: 150%;
    margin: 10px 10px;
    padding: 10px 10px;
    user-select: none;
    background-repeat: repeat;
    animation: moveBackground 50s linear infinite;
    transition: all 0.5s ease;
}

.return-to-main-button-0:hover {
    transform: scale(1.1);
}

@keyframes moveBackground {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 640px 640px;
    }
}