@import url("https://fonts.googleapis.com/css?family=Muli&display=swap");


.semaforo {
  background-color: #2c3e50;
  border-radius: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  padding: 15px 0;
  height: 200px;
  width: 70px;
}

.circle {
  background-color: rgba(0, 0, 0, 0.3);
  border-radius: 100%;
  position: relative;
  height: 40px;
  width: 40px;
}

.circle::after {
  border-right: 4px solid rgba(255, 255, 255, 0.6);
  border-radius: 100%;
  content: " ";
  position: absolute;
  top: 5px;
  left: 0px;
  width: 30px;
  height: 30px;
}

.circle.red {
  background-color: #c0392b;
  box-shadow: 0 0 20px 5px #c0392b;
}

.circle.yellow {
  background-color: #f1c40f;
  box-shadow: 0 0 20px 5px #f1c40f;
}

.circle.green {
  background-color: #2ecc71;
  box-shadow: 0 0 20px 5px #2ecc71;
}