#clockContainer {
    position: relative;
    margin: auto;
    height: 40vw;
    /*to make the height and width responsive*/
    width: 40vw;
    background: url(clock.png) no-repeat;
    /*setting our background image*/
    background-size: 100%;
}

#hour,
#minute,
#second {
    position: absolute;
    background: black;
    border-radius: 10px;
    transform-origin: bottom;
}

#hour {
    width: 1.8%;
    height: 25%;
    top: 25%;
    left: 48.85%;
    opacity: 0.8;
}

#minute {
    width: 1.6%;
    height: 30%;
    top: 19%;
    left: 48.9%;
    opacity: 0.8;
}

#second {
    width: 1%;
    height: 40%;
    top: 9%;
    left: 49.25%;
    opacity: 0.8;
}