body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: black;
    color: white;
    font-family: Arial, sans-serif;
}

h1 {
    margin-bottom: 40px;
    font-size: 24px;
    text-align: center;
}

#traffic-light {
    width: 120px;
    padding: 10px;
    background-color: #1c1c1c;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
}

.light {
    width: 80px;
    height: 80px;
    background-color: grey;
    border-radius: 50%;
    margin: 15px 0;
    border: 5px solid white;
    box-shadow: 0px 0px 15px rgba(255, 255, 255, 0.2);
    transition: background-color 0.5s ease;
}

.red.active {
    background-color: red;
}

.yellow.active {
    background-color: rgb(255, 106, 0);
}

.green.active {
    background-color: green;
}