#light,
#pedestrianLight {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    width: 100px;
    height: 200px;
    margin: 20px;
    box-shadow: 0 0 0 1px #000;
}

#light div,
#pedestrianLight div {
    width: 50px;
    height: 50px;
    box-shadow: 0 0 0 1px #000;
    border-radius: 40px;
}

#btn {
    width: 40px;
    height: 40px;
    border: 3px solid #000;
    border-radius: 45%;
    margin: 20px;
    background-color: #7dfd5d;
    transition: all 0.3s ease;
}

#btn:hover {
    background-color: #4efa23;
    transform: scale(1.05);
}

#btn:active {
    transform: scale(0.95);
}

#btn:disabled {
    transform: scale(1);
    background-color: #999;
    border-color: #7c7c7c;
}