header {
      font-size: 30px;
      font-family:simplifica;
      text-align: center;
      padding-top: 20px;
      background: linear-gradient(135deg, #2c3e50
      0%, #3498db 100%)
      color(white);
      border-radius: 4px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    body {
      margin: 0;
      padding: 0;
      font-family: sans-serif;
      background-color: #DBE9F4;
    }