#preloader {
    height: 100vh;
    width: 100vw;
    position: fixed;
    background-color: #1c2334;
    overflow: hidden;
    z-index: 9999;
}

#actual_vid {
    background: url('https://static.igem.wiki/teams/4879/wiki/preloader.gif') no-repeat center center;
    background-size: cover;
    top: calc(50vh - 250px);
    left: calc(50vw - 250px);
    width: 520px;
    height: 520px;
    position: fixed;
}

#video_pld {
    width: 500px;
    height: 500px;
    border-radius: 50%;
    z-index: 10000;
    position: fixed;
    background-color: rgba(240, 248, 255, 0);
    top: calc(50vh - 500px);
    left: calc(50vw - 500px);
    border: 250px solid #1c2334
}

@media screen and (max-width:700px) {
    #preloader {
        display: none;
    }

    #video_pld {
        display: none;
    }
}