html 

{
    width: 100%;
    height: 100%;
}

body
{
    justify-content: center;
    align-items: center;
    font-family: 'MS Gothic', coGeorgia, 'Times New Roman', Times, serif;
}

a:link {
    color: blue; 
    border-bottom: blueviolet;
}

.content
{
    height: 100vh;
    width: 100%;
    padding: 3px;
    background-image: url(https://smashcustommusic.net/logos/887);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: 5s;

    animation-name: animate;
    animation-direction: alternate-reverse;
    animation-play-state: running;
    animation-timing-function: ease-in-out;
    animation-duration: 30s;
    animation-fill-mode: forwards;
    animation-iteration-count: infinite;
}
@keyframes animate{
    0%{
        background-image: url(https://smashcustommusic.net/logos/887);
    }
    20%{
        background-image: url(https://www.metacritic.com/a/img/catalog/provider/6/12/6-1-503905-52.jpg);
    }
    40%{
        background-image: url(https://theposterhut.co.uk/cdn/shop/products/DSC_0642_d46f92f3-eb47-4449-93d6-0ca15efd0a07_1946x.jpg?v=1581540253);
    }
    60%{
        background-image: url(https://i.ebayimg.com/images/g/z~cAAOSw1P1fbYXw/s-l1600.webp);
    }
    80%{
        background-image: url(https://ps2media.ign.com/media/news/image/ps2ads/doa2_ad2.jpg);
    }
    100%{
        background-image: url(https://www.metacritic.com/a/img/catalog/provider/6/12/6-1-503905-52.jpg);
    }

}