body {
  font-family: sans-serif;
  font-size: 20;
  background: #f5f5f5;
  padding: 2em;
}

h1, h2 {
  color: #333;
}

.webinar {
  background: #fff;
  padding: 1em;
  margin-bottom: 1em;
  border-radius: 8px;
}

form input, form textarea {
  width: 80%;
  margin: 0.5em 0;
  padding: 0.5em;
}

button {
  padding: 0.5em 1em;
  background: #0066cc;
  color: #fff;
  border: none;
  border-radius: 4px;
}