:root {
  box-sizing: border-box;
  font-size: 16px;
  line-height: 20px;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.container {
  max-width: 1200px;
  padding: 0 15px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
}
.traffic__lights {
  background-color: #000000;
  width: 100px;
  height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  border-radius: 10px;
}
.lights {
  width: 70px;
  height: 70px;
  background-color: #ececec;
  border-radius: 50%;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3em;
}
#green.active,
#green2.active,
#green3.active {
  background-color: #5bff00;
}
#yellow.active,
#yellow2.active,
#yellow3.active {
  background-color: #fffe00;
}
#red.active,
#red2.active,
#red3.active {
  background-color: #ff0000;
}
.btn,
.btn-light {
  border: none;
  background-color: rgb(3, 70, 70);
  color: #fff;
  cursor: pointer;
  padding: 25px 35px;
  font-size: 2em;
  border-radius: 5px;
  transition: all 0.3s;
}
.btn:disabled,
.btn-light:disabled {
  background-color: #ececec;
  color: #000;
  opacity: 0.5;
}