.menu-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #05b832; /* you can change the background color as per your preference */
    padding: 10px;
    border-bottom: 1px solid #cccccc;
    z-index: 1000; /* to ensure the menu bar is on top of other elements */
  }
  
  .menu-bar ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  
  .menu-bar li {
    margin-right: 20px;
    position: relative; /* added this to make the dropdown menus position relative to the parent li */
  }
  
  .menu-bar a {
    color: #333;
    text-decoration: none;
    display: block; /* added this to make the links clickable */
    padding: 10px; /* added this to give the links some padding */
  }
  
  .menu-bar a:hover {
    color: #f5f114;
    background-color: #05b832; /* added this to give the links a hover effect */
  }
  
  .menu-bar .active {
    background-color: #05b832;
    border-radius: 5px;
    padding: 5px;
  }
  
  .menu-bar .about-menu, .menu-bar .services-menu {
    display: none;
    position: absolute;
    top: 35px; /* adjusted the top position to display the menu below the parent li */
    left: 0;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    padding: 10px;
    width: 200px;
  }
  
  .menu-bar .about-menu ul, .menu-bar .services-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    flex-direction: column; /* added this to make the submenu items display vertically */
  }
  
  .menu-bar .about-menu li, .menu-bar .services-menu li {
    margin-bottom: 10px; /* added this to add space between the submenu items */
  }
  
  .menu-bar li:hover .about-menu, .menu-bar li:hover .services-menu {
    display: block;
  }
  
  .menu-bar .diploma, .menu-bar .certificate {
    display: none;
    position: absolute;
    top: 35px; /* adjusted the top position to display the menu below the parent li */
    left: 0;
    background-color: #05b832;
    border: 1px solid #ccc;
    padding: 10px;
    width: 150px;
  }
  
  .menu-bar .diploma ul, .menu-bar .certificate ul {
    list-style: none;
    margin: 0;
    padding: 0;
    flex-direction: column; /* added this to make the submenu items display vertically */
  }
  
  .menu-bar .diploma li, .menu-bar .certificate li {
    margin-bottom: 10px; /* added this to add space between the submenu items */
  }
  
  .menu-bar .diploma-menu:hover .diploma, .menu-bar .certificate-menu:hover .certificate {
    display: block;
  }