body {
    font-family: 'Nunito', sans-serif;
    margin: 0;
  }
  
  * {
    box-sizing: border-box;
  }
  
  header {
    padding-inline: 32px;
    box-shadow: 0px 1px 4px 0px rgba(0, 0, 0, 0.1);
  }
  
  header > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    max-width: 1400px;
    margin-inline: auto;
    position: relative;
  }
  
  .logo-container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
  }
  
  .nav-user-container {
    display: flex;
    flex-grow: 1;
  }
  
  .courses {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    position: relative;
  }
  
  .courses > img {
    transition: transform 0.2s ease-in-out;
  }
  .courses:hover > img {
    transform: rotate(-180deg);
  }
  
  a {
    text-decoration-line: none;
    color: inherit;
  }
  
  li {
    list-style-type: none;
  }
  
  ul {
    padding-left: 0;
    margin: 0;
  }
  
  .courses ul {
    position: absolute;
    border-radius: 5px;
    border: 1.5px solid #e9eaeb;
    background-color: #fff;
    box-shadow: 0px 4px 10px 0px rgba(30, 27, 27, 0.1);
    top: 150%;
    width: 260px;
    font-size: 14px;
    padding: 16px 24px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease-in-out;
  }
  
  .courses:hover ul {
    opacity: 1;
    pointer-events: all;
    top: 80%;
  }
  
  .courses ul > li + li {
    margin-top: 8px;
  }
  
  .courses ul > li:hover {
    text-decoration-line: underline;
  }
  
  nav {
    margin-inline: auto;
  }
  
  nav > ul {
    display: flex;
    gap: 48px;
  }
  
  nav > ul > li {
    padding-block: 20px;
  }
  
  .user {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
  }
  
  .user-icon {
    display: flex;
    position: relative;
  }
  
  .green-dot {
    height: 12px;
    width: 12px;
    background-color: #22c55e;
    border-radius: 100%;
    position: absolute;
    right: 0;
    bottom: 0;
  }
  
  .close-icon,
  .hamburger-menu {
    display: none;
  }
  
  #hamburger-checkbox {
    display: none;
  }
  
  @media (max-width: 860px) {
    header {
      padding-inline: 16px;
    }
    
    .close-icon,
    .hamburger-menu {
      display: block;
    }
  
    .close-icon {
      margin-left: auto;
      cursor: pointer;
    }
  
    header > div {
      padding-block: 6px;
    }
  
    .nav-user-container {
      display: none;
      position: absolute;
      top: 10px;
      right: 0;
      flex-direction: column-reverse;
      border-radius: 5px;
      border: 1.5px solid #e9eaeb;
      background: #fff;
      box-shadow: 0px 4px 10px 0px rgba(30, 27, 27, 0.1);
      width: 260px;
    }
 
  
    input:checked + .nav-user-container {
      display: flex;
    }
  
    nav > ul {
      flex-direction: column;
      gap: 0;
    }
  
    nav {
      margin-inline: unset;
      padding-left: 24px;
    }
  
    nav > ul > li {
      padding-block: 8px;
    }
  
    .user {
      border-bottom: 1px solid #e9eaeb;
      padding-inline: 24px;
      padding-block: 8px;
    }
  
    .courses ul {
      left: -24px;
    }
  }