style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: rgba(2, 2, 54, 0.932);
}

.clock{
    position: relative;
    width: 450px;
    height: 450px;
    background: rgba(1, 1, 39, 0.932);
    border-radius: 50%;
    box-shadow: 10px 50px 70px rgba(0,0,0,0.25)
    inset 5px 5px 10px rgba(0,0,0,0.5),
    inset 5px 5px 10px rgba(0,0,0,0.2),
    inset -5px -5px 15px rgba(0,0,0,0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}
.clock::before{
    content: '';
    position: absolute;
    background: rgba(4, 4, 94, 0.932);
    border: 3px solid white;
    border-radius: 50%;
    z-index: 100000;
}
.clock span{
    position: absolute;
    inset: 20px;
    color: white;
    text-align: center;
    transform: rotate(calc(30deg*var(--i)));
}
.clock span b{
    font-size: 2em;
    font-weight: 600;
    display: inline-block;
    transform: rotate(calc(-30deg*var(--i)));
}
.circle{
    position: absolute;
    width: 300px;
    height: 300px;
    border: 2px solid rgba(0,0,0,0.25);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    z-index: 10;
}
.circle i{
    position: absolute;
    width: 6px;
    height: 50%;
    background: var(--clr);
    opacity: 0.75;
    transform-origin: bottom;
    transform: scale(0.5);
    z-index: 9;
}
.circle2{
    width: 240px;
    height: 240px;
    z-index: 9;
}

.circle3{
    width: 180px;
    height: 180px;
    z-index: 8;
}

.circle::before{
    content: '';
    position: absolute;
    top: -8.5px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--clr);
    box-shadow: 0 0 20px var(--clr),
    0 0 60px var(--clr);

}