style.css

*{
    box-sizing: border-box;
    font-family: fantasy;
    /*font-family: font, Haettenschweiler, 'Arial Narrow Bold', sans-serif; */
}
body{
    background-image: url('wallpaper.jpg');
    /* background-color: aqua; */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    background-size: cover;
}
.clock{
    
    width: 260px;
    height: 260px;
    background-color: rgba(230, 219, 222, 0.9); 
    border-radius: 50%;
    border: 2px solid rgb(19, 55, 15);
    position: relative;
}
.clock .number{
    --rotation: 0;
    position: absolute;
    width: 100%; 
    height: 100%;
     /* background-color: blue;  */
    text-align: center;
    transform: rotate(var(--rotation));
    font-size: 20px;
}
.clock .number1{ --rotation: 30deg;}
.clock .number2{ --rotation: 60deg;}
.clock .number3{ --rotation: 90deg;}
.clock .number4{ --rotation: 120deg;}
.clock .number5{ --rotation: 150deg;}
.clock .number6{ --rotation: 180deg;}
.clock .number7{ --rotation: 210deg;}
.clock .number8{ --rotation: 240deg;}
.clock .number9{ --rotation: 270deg;}
.clock .number10{ --rotation: 300deg;}
.clock .number11{ --rotation: 330deg;}
/* .clock .number12{ --rotation: 360deg;} */

.clock .hand{

    --rotation: 0;
    position: absolute;
    bottom: 50%;
    left: 50%;
    /* width: 9px; 
    height: 42%;   */
    background-color: black;
    border: 1px solid white;
    border-top-left-radius: 50px;
    border-top-right-radius: 50px;
    transform-origin: bottom;
    z-index: 10;
    transform: translateX(-50%) rotate(calc(var(--rotation) * 1deg));
}

.clock::after {
    content: '';
    position: absolute;
    background-color: black;
    z-index: 12;
    width: 15px;
    height: 15px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
}

.clock .hand.second {
    width: 3px;
    height: 40%;
    background-color: red;
}

.clock .hand.hour {
    width: 7px;
    height: 25%;
    background-color: green;
}

.clock .hand.minute {
    width: 7px;
    height: 35%;
    background-color: black;
}