.traffic-ligth{width:300px;height:100px;background-color:#4a4848;padding:20px}.traffic-ligth ul{display:flex;height:100%;justify-content:space-around;align-items:center;padding:0;margin:0;list-style:none}.traffic-ligth li{align-self:stretch;width:30%;background-color:azure;border-radius:50%}