index.css

#clockContainer{
    /* border: 2px solid red; */
    height: 42vw;
    width: 42vw;
    background: url('clock.jpg') no-repeat;
    background-size: 100%;
    margin: auto;
    position: relative;
}

#hour, #minute, #second{
    position: absolute;
    /* background-color: black; */
    border-radius: 10px;
    transform-origin: bottom;
}
#hour{
    opacity: 0.9;
    width: 1.8%;
    height: 25%;
    top: 23%;
    left: 48.48%;
    background-color: #032639;
    /* display: none; */
}
#minute{
    width: 0.9%;
    height: 31%;
    top: 17%;
    left: 49%;
    opacity: 0.8;
    background-color: rgb(63 4 4);
    /* display: none; */
}
#second{
    width: 0.6%;
    height: 36%;
    top: 12%;
    left: 49.1%;
    opacity: 0.7;
    background-color: black;
    /* display: none; */
}