<div class="newsletter-box">
  <h3>Join our Newsletter</h3>
  <p>Get the latest updates delivered to your inbox.</p>
  <form class="subscribe-form">
    <input type="email" placeholder="Enter your email address" required>
    <button type="submit">Subscribe</button>
  </form>
</div>

.newsletter-box {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background: #fff;
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  max-width: 500px;
  border: 1px solid #f3f4f6;
}
.newsletter-box h3 {
  margin: 0 0 10px 0;
  color: #111827;
  font-size: 1.5rem;
}
.newsletter-box p {
  color: #6b7280;
  margin-bottom: 25px;
}
.subscribe-form {
  display: flex;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 50px;
  padding: 5px;
  transition: border-color 0.2s;
}
.subscribe-form:focus-within {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.subscribe-form input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px 20px;
  outline: none;
  font-size: 1rem;
  color: #1f2937;
}
.subscribe-form button {
  background: #111827;
  color: white;
  border: none;
  padding: 10px 25px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.subscribe-form button:hover {
  background: #000;
}