body {
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f8f9fa;
    color: #333;
    margin: 0;
}

h2 {
    margin-bottom: 15px;
    color: #212529;
    text-align: center;
    font-size: 1.6em;
}

form {
    margin: 0 auto;
    margin-top: 20px;
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0px 2px 10px rgba(0,0,0,0.1);
    max-width: 600px;
}

input[type="text"], input[type="email"] {
    padding: 12px;
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 16px;
    box-sizing: border-box;
}

input[type="checkbox"] {
    margin-right: 10px;
}

button {
    padding: 14px 20px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
    margin-top: 10px;
}

button:hover {
    background-color: #218838;
}

canvas {
    border: 2px dashed #666;
    background-color: #fff;
    margin: 10px 0;
    width: 100%;
    max-width: 400px;
    height: 150px;
    touch-action: none;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

iframe {
    width: 100%;
    height: 400px;
    border: 1px solid #ccc;
    margin-bottom: 20px;
    border-radius: 6px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
  body {
    padding: 15px;
    font-size: 16px;
  }

  h2 {
    font-size: 1.3em;
  }

  form {
    padding: 20px;
    box-shadow: none;
    border: 1px solid #ddd;
  }

  button {
    font-size: 16px;
    padding: 12px;
  }

  canvas {
    height: 140px;
  }

  iframe {
    height: 300px;
  }
}