body, html {
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
      font-family: Arial, sans-serif;
      color: #f4f4f4;
      height: 100%; /* Ensures full height layout */
    }

    section {
      height: 100vh;
      display: none; /* Hide all sections by default */
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    section.active {
      display: flex; /* Show the active section */
    }

    h1 {
      font-size: 3em;
      margin: 0;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    p {
      font-size: 1.5em;
      margin: 10px 0;
      max-width: 600px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    a {
      font-size: 2em;
      margin: 10px 0;
      max-width: 600px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
      color: #f4f4f4;
      text-decoration: none;
      opacity: 0.8;
      transition: 0.3s;
    }

    a:hover {
      background-color: #575757;
      opacity: 1;
    }

    .logo-container {
      position: absolute;
      top: 15px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 3;
    }

    .logo-container img {
      width: 64px;
      height: 64px;
    }

    #sidebar {
      position: fixed;
      top: 0;
      left: 0;
      height: 100%;
      width: 100%;
      background-color: rgba(51, 51, 51, 0.8);
      color: white;
      padding-top: 60px;
      z-index: 2;
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      opacity: 0; /* Start hidden */
      transition: opacity 0.3s ease-in-out; /* Smooth fade effect */
    }

    #sidebar.visible {
      opacity: 1; /* Fully visible when active */
    }

    #sidebar a {
      padding: 15px 20px;
      text-decoration: none;
      font-size: 2.5em;
      color: #f4f4f4;
      display: block;
      transition: 0.3s;
      text-align: center;
    }

    #sidebar a:hover {
      background-color: #575757;
    }

    #menuToggle {
      font-size: 2em;
      color: #f4f4f4;
      cursor: pointer;
      position: fixed;
      top: 15px;
      left: 20px;
      z-index: 3;
    }

    #welcome {
      background: url('https://wisp.wispnet.org/resources/imgl/redlight-trainyard_img(DSC_0157).JPG') no-repeat center;
      background-size: cover;
    }

    #about {
      background: url('https://wisp.wispnet.org/resources/imgl/trainrun_img(IMG_0936).jpeg') no-repeat center;
      background-size: cover;
    }

    #pong {
      background: url('https://wisp.wispnet.org/resources/pngl/pong.png') no-repeat center;
      background-size: cover;
    }

    #maze {
      background-size: cover;
      background-color: #333;
    }