*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
  }
  
  .card {
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }
  
  .navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
  }
  
  h2, h4 {
    font-weight: 600;
  }