body {
      font-family: Arial, sans-serif;
      margin: 0;
      background: #f4f4f9;
      color: #333;
    }
    header {
      background: #222;
      color: #fff;
      padding: 20px 0;
      text-align: center;
    }
    header img {
      width: 150px;
      height: 150px;
      border-radius: 50%;
      border: 4px solid #fff;
      object-fit: cover;
    }
    header h1 {
      margin: 10px 0 5px;
      font-size: 2.5rem;
    }
    header p {
      margin: 0;
      font-size: 1.2rem;
    }
    nav {
      margin-top: 10px;
    }
    nav a {
      color: #fff;
      text-decoration: none;
      margin: 0 15px;
      font-weight: bold;
    }
    section {
      padding: 40px 20px;
      max-width: 1000px;
      margin: auto;
    }
    h2 {
      text-align: center;
      margin-bottom: 20px;
      color: #444;
    }
    .box {
      background: #fff;
      margin-bottom: 20px;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0px 2px 6px rgba(0,0,0,0.1);
    }
    .skills ul {
      list-style: none;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
      justify-content: center;
    }
    .skills li {
      background: #4caf50;
      color: #fff;
      padding: 10px 20px;
      border-radius: 20px;
    }
    .timetable table {
      width: 100%;
      border-collapse: collapse;
      text-align: center;
    }
    .timetable th, .timetable td {
      border: 1px solid #ccc;
      padding: 10px;
    }
    .timetable th {
      background: #4caf50;
      color: #fff;
    }
    .social-links {
      text-align: center;
    }
    .social-links a {
      margin: 0 15px;
      font-size: 28px;
      color: #444;
      transition: 0.3s;
    }
    .social-links a:hover {
      color: #4caf50;
    }
    footer {
      background: #222;
      color: #fff;
      text-align: center;
      padding: 15px;
      margin-top: 20px;
    }