/* Algemene opmaak */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(to right, #eef2f3, #8e9eab);
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  header {
    background-color: #004b8d;
    color: white;
    padding: 1rem 2rem;
    text-align: center;
  }
  
  nav {
    margin-top: 0.5rem;
  }
  
  nav a {
    margin: 0 1rem;
    color: #f0f0f0;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
  }
  
  nav a:hover {
    color: #ffdd57;
  }
  
  main {
    flex: 1;
    padding: 2rem;
    max-width: 900px;
    margin: auto;
    background-color: white;
    border-radius: 1rem;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
  }
  
  footer {
    text-align: center;
    padding: 1rem;
    background-color: #ccc;
    color: #333;
  }
  
  /* Buttons */
  button {
    background-color: #0077cc;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    margin: 0.5rem 0;
    font-size: 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #005fa3;
  }
  
  /* Quiz */
  #uitleg {
    margin-top: 1rem;
    font-weight: bold;
  }