body{
    box-sizing: border-box;
    font-size: 30px;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(to right , blue ,skyblue);
    --rotation: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.clock{
    border-radius: 50%;
    background-color: rgba(255,255,255,0.8);
    height: 400px;
    width: 400px;
    border: solid 5px black ;
    position: relative;
}
.number{
    position:absolute;
    width: 100%;
    height: 100%;
    text-align: center;
    transform: rotate(var(--rotation));
}
.number1{--rotation:30deg;}
.number2{--rotation:60deg;}
.number3{--rotation:90deg;}
.number4{--rotation:120deg;}
.number5{--rotation:150deg;}
.number6{--rotation:180deg;}
.number7{--rotation:210deg;}
.number8{--rotation:240deg;}
.number9{--rotation:270deg;}
.number10{--rotation:300deg;}
.number11{--rotation:330deg;}

.clock::after{
    content: "";
    position: absolute;
    height: 15px;
    width: 15px;
    background-color: black;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    border-radius: 50%;
    z-index: 11;
}

.hand{
    position:absolute;
    bottom: 50%;
    left: 50%;
    height: 50%;
    width: 10px;
    background-color: black;
    transform-origin: bottom;
    transform: translateX(-50%);
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    z-index: 10;
    transform: rotate(calc(var(--rotation) * 1deg));
}
.second{
    height: 40%;
    background-color: red;
    height: 42%;
    width: 3px;
}
.minute{
    height: 30%;
    width:5px;
    background-color: black;
}
.hour{
    height:20%;
    width: 7px;
}