* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    background-image: url("https://images.unsplash.com/photo-1428908728789-d2de25dbd4e2?q=80&w=1740&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

#container {
    height: 200px;
    width: 700px;
    border-radius: 30px;
    box-shadow: inset 0 0 15px rgba(135, 135, 135, .1), 0 0 20px 2px rgba(0, 0, 0, .3);
    display: flex;
    justify-content: center;
    align-items: center;    
}

#clock {
    height: 100px;
    width: 600px;
    font-size: 8rem;
    font-family: monospace;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgb(147, 190, 227);
}