body {
  font-family: Arial, sans-serif;
  background: #f0f0f0;
  margin: 0;
  padding: 0;
  color: #333;
}

header, footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 20px;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 20px;
  background: white;
}

section {
  margin-bottom: 40px;
}

h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 5px;
}

img {
  max-width: 100%;
  margin: 10px 0;
  border: 2px solid #ccc;
}

iframe {
  width: 100%;
  max-width: 560px;
  height: 315px;
  margin: 10px 0;
}

a {
  color: #0077cc;
}

form {
  margin-top: 10px;
}

input[type="email"] {
  padding: 10px;
  width: 60%;
  max-width: 300px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 10px 20px;
  margin-left: 10px;
  border: none;
  background: #0077cc;
  color: white;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #005fa3;
}