body {
    background: linear-gradient(
            -45deg,
            #e3f5fc,
            #51ecfc,
            #3fb7ff,
            #2c72fc,
            #174c87,
            #010043,
            #001e3d
    );
    background-size: 250% 250%;
    animation: gradient 32s ease infinite;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}