body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: radial-gradient(ellipse at center, #0a2e38 0%, #000000 70%);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
#timedate {
    font: small-caps lighter 43px/150% "Segoe UI", Frutiger, "Frutiger Linotype", "Dejavu Sans", "Helvetica Neue", Arial, sans-serif;
    color: #fff;
    padding: 10px 0;
    text-align: center;
    font-size: 5rem;
    margin-bottom: 0;
}
.time {
    font: small-caps lighter 43px/150% "Segoe UI", Frutiger, "Frutiger Linotype", "Dejavu Sans", "Helvetica Neue", Arial, sans-serif;
    color: #fff;
    padding: 0px;
    text-align: center;
    font-size: 24rem;
    margin-top: -65px;
    font-weight: 400;
}
@media screen and (max-width:900px) {
    body {
        margin: auto;
        background-repeat: no-repeat;
        background-size: cover;
    }
    #timedate {
        font-size: 1rem;
    }
    .time {
        margin-top: -10px;
        font-size: 3rem;
    }
}