#footer {
    background: linear-gradient(-45deg, #ee7752, #ce3e75, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: moveGradient 10s ease infinite;
    user-select: none;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

@keyframes moveGradient {
    0% {
        background-position: 0% 50%
    }

    50% {
        background-position: 100% 50%
    }

    100% {
        background-position: 0% 50%
    }
}