body {
    background-color:bisque;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: medium;
}

main {
    position: relative;
    width: 400px;
    height: 400px;
    background-color: #a7cece;
    border-radius: 50%;
    box-shadow: 0 0 20px #444444;
    display: flex;
    justify-content: center;
    align-items: center;
}

div#simClock {
    width: 370px;
    height: 370px;
    background-color: beige;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 10px #444444;
}

main #simClock .num {
    position: absolute;
    color: violet;
    font-size: 50px;
    font-weight: 800;
}

.num:first-child {
    top: 15px;
}
.num:nth-child(2) {
    right: 25px;
}
.num:nth-child(3) {
    bottom: 15px;
}
.num:nth-child(4) {
    left: 25px;
}

main .tick{
    position:absolute;
    top: 0;
    width: 6px;
    height: 40px;
    background-color: #a7cece;
    transform-origin: center 200px;
}

main #axle {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #a7cece;
    border-radius: 50%;
    box-shadow: 0 0 10px #444444;
}

main #_hour {
    position: absolute;
    top: 50%;
    width: 12px;
    height: 80px;
    background-color: #a7cece;
    box-shadow: 0 0 10px #444444;
    transform: translateY(-100%);
    transform-origin: center bottom;
}

main #_minute {
    position: absolute;
    top: 50%;
    width: 9px;
    height: 110px;
    background-color: #a7cece;
    border-radius: 2%;
    box-shadow: 0 0 10px #444444;
    transform: translateY(-100%);
    transform-origin: center bottom;
}

main #_sec {
    position: absolute;
    top: 50%;
    width: 5px;
    height: 130px;
    background-color: #fff;
    border-radius: 30%;
    box-shadow: 0 0 10px #444444;
    transform: translateY(-100%);
    transform-origin: center bottom;
}

main #bolt {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: #a7cece;
    border-radius: 50%;
    box-shadow: 0 0 10px #444444;
}