* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  overflow: hidden;
  background: #333;
}
.container {
  width: 100vw;
  height: 100vh;
  position: relative;
}
.container img {
  width: 100vw;
  height: 100vh;
  /* object-fit: cover; */
}
.signal {
  position: absolute;
  top: 5vh;
  left: 50%;
  width: 15vw;
  max-width: 100px;
  height: auto;
  background: #111;
  border-radius: 10px;
  padding: 5px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
.light {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #333;
}

button {
  padding: 10px 25px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  color: white;
}

#startBtn {
  background: limegreen;
  position: absolute;
  top: 2vh;
  left: 5vw;
}

#stopBtn {
  background: crimson;
  position: absolute;
  top: 2vh;
  left: 20vw;
}

.line {
  position: absolute;
  left: 50vw;
  bottom: 0;
  width: 0.2vw;
  height: 18vh;
 
}

#car {
  position: absolute;
  bottom: 13%;
  left: 0;
  transition: 0.1s;
  width: 25vw;
  max-width: 250px;
}
@media (max-width: 768px) {
  #car {
    width: 40vw;
    bottom: 10%;
  }

  .signal {
    width: 25vw;
  }

  .line {
    left: 60vw;
  }

  button {
    font-size: 14px;
    padding: 8px 18px;
  }
}