traffic-light/index.html at main · divyakamath329/traffic-light · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>traffic-light stimulator</title>
    <style>
      body {
        display: flex;
        flex-direction: column;
        align-items: center;
        background-image: url(traffic.png);
        background-repeat: no-repeat;
        background-size: cover;
        border: 20px;
      }
      h1 {
        background-color: white;
        color: brown;
        border: 2px solid brown; /* fixed border */
        padding: 10px;
        margin-top: 20px;
        border-radius: 5px;
      }

      .traffic-light {
        width: 100px;
        height: 300px;
        border: 1px solid black;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: space-between;
        margin-top: 50px;
      }

      .light {
        width: 80px;
        height: 80px;
        border-radius: 50%;
        margin: 10px;
        background-color: transparent;
      }
      .red {
        background-color: red;
      }
      .yellow {
        background-color: yellow;
      }
      .green {
        background-color: green;
      }
    </style>
  </head>
  <body>
    <!-- Added title here -->
    <h1>Traffic Light Simulator</h1>

    <div class="traffic-light">
      <div class="light red"></div>
      <div class="light yellow"></div>
      <div class="light green"></div>
    </div>

    <script>
      const redLight = document.querySelector(".red");
      const yellowLight = document.querySelector(".yellow");
      const greenLight = document.querySelector(".green");
      function changeLight() {
        setTimeout(() => {
          redLight.style.backgroundColor = "red";
          yellowLight.style.backgroundColor = "transparent";
          greenLight.style.backgroundColor = "transparent";

          setTimeout(() => {
            redLight.style.backgroundColor = "transparent";
            yellowLight.style.backgroundColor = "yellow";
            greenLight.style.backgroundColor = "transparent";

            setTimeout(() => {
              redLight.style.backgroundColor = "transparent";
              yellowLight.style.backgroundColor = "transparent";
              greenLight.style.backgroundColor = "green";

              changeLight();
            }, 2000);
          }, 1000);
        }, 2000);
      }
      changeLight();
    </script>
  </body>
</html>