.flex-container {
    display: flex;
    flex-wrap: wrap;
    
  }
  
  
  body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
      background-color: #f4f4f4;
  }
  
  header {
      background-color: #333;
      text-align: center;
      padding: 1px;
  }
  
  h1 {
      font-size: 36px;
      color: #fff;
  }
  
  .header-image {
      max-width: 100px;
  }
  nav {
      background-color: #333;
      max-width: 1300px; 
      margin: 0 auto;
      text-align: center; 
  }
  
  .nav-tabs {
      list-style-type: none;
      padding: 0;
  }
  
  .nav-tabs li {
      display: inline;
      margin: 0 10px;
  }
  
  .nav-tabs a {
      color: #fff;
      text-decoration: none;
  }
  
  .container {
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      background-color: #fff;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }
  
  h2 {
      font-size: 24px;
  }
  
  p {
      font-size: 16px;
      line-height: 1.5;
  }
  
  ul {
      list-style-type: disc;
      margin-left: 20px;
  }
  
  .category {
      margin-top: 20px;
      border-top: 2px solid #333;
      padding-top: 20px;
  }