.ibm-plex-mono-regular {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 400;
  font-style: normal;
}

  body {
      font-family: IBM Plex Mono, sans-serif;
      margin: auto;
      max-width: 500px;
      padding: 0;
      background: linear-gradient(135deg, #e0f7fa, #f1f8e9);
      color: #333;
    }

    header {
      background-color: rgba(34, 34, 34, 0.85);
      color: white;
      text-align: center;
      padding: 40px 20px;
      border-bottom: 3px solid #007BFF;
    }

   

    header p {
      margin: 10px 0 0;
      font-size: 1.1em;
    }

    .container {
      width: 90%;
      max-width: 1000px;
      margin: 30px auto;
      overflow: hidden; /* clears floats */
    }

    .sidebar, .main {
      padding: 20px;
      box-sizing: border-box;
      border-radius: 8px;
      border: 1px solid rgba(0,0,0,0.15);
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      background-color: rgba(255, 255, 255, 0.0); /* transparent! */
      backdrop-filter: blur(3px); /* optional soft blur for readability */
    }

    .sidebar {
      float: left;
      width: 30%;
      margin-right: 3%;
    }

    .main {
      float: left;
      width: 67%;
    }

    

    ul {
      list-style-type: none;
      padding: 0;
    }

    ul li {
      margin: 5px 0;
    }

    footer {
      clear: both;
      background-color: rgba(34, 34, 34, 0.85);
      color: white;
      text-align: center;
      padding: 15px;
      margin-top: 30px;
    }

    /* Responsive layout */
    @media (max-width: 768px) {
      .sidebar, .main {
        float: none;
        width: 100%;
        margin: 0 0 20px 0;
      }
    }