.-body {
    background-color: #e74c3c;
    animation: bg-color 60s infinite;
}

@keyframes bg-color {
    0% {
        background-color: #5260bd;
    }

    20% {
        background-color: #22308a;
    }

    40% {
        background-color: #142074;
    }

    60% {
        background-color: #4858be;
    }

    80% {
        background-color: #5f6dcc;
    }

    100% {
        background-color: #5260bd;
    }
}