/* Common Styles */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
  }
  
  h1 {
    margin: 0;
    color: #ffffff;
  }
  
  h2 {
    margin-top: 40px;
  }
  
  ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  
  a {
    text-decoration: none;
    color: #ffffff;
  }
  
  /* Theme Styles */
  .dark-grey-purple {
    background-color: #2b2b2b;
    color: #ffffff;
  }
  
  .dark-grey-purple header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #191919;
    padding: 10px;
    z-index: 999;
  }
  
  .dark-grey-purple header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .dark-grey-purple header nav ul {
    display: flex;
  }
  
  .dark-grey-purple header nav li {
    margin-left: 10px;
  }
  
  .dark-grey-purple main {
    padding-top: 80px;
  }
  
  /* Hide the menu bar when scrolling down */
  .dark-grey-purple header.hidden {
    transform: translateY(-100%);
  }
  
  /* Media Queries */
  @media screen and (max-width: 768px) {
    .dark-grey-purple header .container {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .dark-grey-purple header nav {
      display: none;
    }
  
    .dark-grey-purple header #menu-toggle {
      display: block;
      width: 30px;
      height: 20px;
      background-color: #ffffff;
      border-radius: 4px;
      cursor: pointer;
    }
  
    .dark-grey-purple header #main-nav {
      display: none;
      padding-left: 20px;
      padding-bottom: 10px;
    }
  
    .dark-grey-purple header #main-nav.active {
      display: block;
    }
  
    .dark-grey-purple header #main-nav ul {
      flex-direction: column;
    }
  
    .dark-grey-purple header #main-nav li {
      margin-left: 0;
      margin-bottom: 10px;
    }
  }