* {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: system-ui, sans-serif;
    }

    header {
      width: 100vw;
      margin: 0 auto;
      background-color: black;
      /* position: sticky; */
      top: 0;
      z-index: 1000;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 3vh; /* or desired value */
    }

    .nav-container {
      height: 100%;
      margin: 0 auto;
      padding: 0.25rem 1rem;
      display: flex;
      justify-content: center;
      position: relative;
      align-items: center;
    }

    nav {
      display: flex;
      justify-content: center;
      align-items: center;
    }

    nav ul {
      list-style: none;
      display: flex;
      gap: 1rem;
      padding: 0;
      margin: 0;
    }

    nav a {
      text-decoration: none;
      color: white;
      padding: 0.5rem;
      transition: color 0.2s;
      font-size: 1rem;
    }

    nav a:hover {
      color: #3b3b3b;
    }

    .donate-btn {
      background-color: #0077cc;
      color: white;
      border: none;
      padding: 0.25rem;
      border-radius: 4px;
      height: 20px;
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      cursor: pointer;
    }

    .bar {
      height: 3px;
      width: 25px;
      margin: 4px 0;
    }

    .nav-links-wrapper {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    @media (max-width: 768px) {
      nav ul {
        display: none;
        flex-direction: column;
        background: black;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        padding: 1rem;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
      }

      nav ul.show {
        display: flex;
      }

      .menu-toggle {
        display: flex;
      }
    }