body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.clock {
    position: relative;
    width: 300px;
    height: 300px;
}

.circle {
    position: absolute;
    border: 1px solid black;
    border-radius: 50%;
}

#hour-circle {
    width: 200px;
    height: 200px;
    top: 50px;
    left: 50px;
    border-color: red;
}

#minute-circle {
    width: 240px;
    height: 240px;
    top: 30px;
    left: 30px;
    border-color: green;
}

#second-circle {
    width: 280px;
    height: 280px;
    top: 10px;
    left: 10px;
    border-color: blue;
}

#day-circle {
    width: 140px;
    height: 140px;
    top: 80px;
    left: 80px;
    border-color: purple;
}

.time-label {
    position: absolute;
    width: 100%;
    text-align: center;
    font-size: 1.5em;
}

#hour-label {
    top: 150px;
    left: 0;
}

#minute-label {
    top: 130px;
    left: 0;
}

#second-label {
    top: 110px;
    left: 0;
}

#day-label {
    top: 170px;
    left: 0;
    color: purple;
}