body {
    margin: 0;
    font-family: 'Gill sans';
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    justify-content: center;
    background: url(https://images.unsplash.com/photo-1499002238440-d264edd596ec?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=870&q=80);
    background-size: cover;
    overflow: hidden;
}

h2 {
    text-transform: capitalize;
    letter-spacing: 4px;
    font-size: 14px;
    text-align: center;
    color: white;
    }

    .clock {
        display: flex;
    }

    .clock div {
        margin: 5px;
        position: relative;
    }

    .clock span {
        width: 100px;
        height: 80px;
        background: slateblue;
        opacity: 0.8;
        color: white;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 50px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);

    }

    .clock .text {
        height: 30px;
        font-size: 10px;
        text-transform: uppercase;
        letter-spacing: 2px;
        background: darkblue;
        opacity: 0.8;
    }

    .clock #ampm {
        bottom: 0;
        position: absolute;
        width: 60px;
        height: 30px;
        font-size: 20px;
        background: purple;
    }