body {
    background: #196F3D;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif
}

h1 {
    color: #ffffff;
    text-align: center;
    font-size: 74px;
    letter-spacing: 2px;
}

#del-countdown {
    width: 600px;
    margin: 150px auto;
}

#clock span {
    float: left;
    text-align: center;
    font-size: 60px;
    margin: 0 2.5%;
    color: #ffffff;
    padding: 20px;
    width: 20%;
    border-radius: 20px;
    box-sizing: border-box;
}

#clock span:nth-child(1) {
    background: #C70039;
}

#clock span:nth-child(2) {
    background: #FF5733;
}

#clock span:nth-child(3) {
    background: #FFC300;
}

#clock span:nth-child(4) {
    background: #C9E498;
}

#clock:after {
    content: "";
    display: block;
    clear: both;
}

#units span {
    float: left;
    width: 25%;
    text-align: center;
    margin-top: 30px;
    color: #D7DBDD;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 2px;
    text-shadow: 1px 1px 1px rgba(10, 10, 10, 0.7)
}

span.turn {
    animation: turn 0.5s ease forwards;
}

@keyframes turn {
    0% {
        transform: rotateY(0deg)
    }

    100% {
        transform: rotateY(360deg)
    }
}