.traffic-lightS {
    display: flex;
}
.lights {
    margin: 20px;
    height: 400px;
    background-color: gray;
    border-radius: 40%;
    width: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

}
.oneColor {
    background-color: black;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 10px;
    font-size: 20px;
    color: yellow;
    display: flex;
    justify-content: center;
    align-items: center;
}
#knopka {
    background-color: tomato;
}