* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  color: #333;
}

header {
  background-color: #2c3e50;
  color: white;
  padding: 20px;
  text-align: center;
}

main {
  padding: 40px;
  text-align: center;
}

.content {
  max-width: 800px;
  margin: 0 auto;
}

button {
  padding: 12px 20px;
  font-size: 16px;
  background-color: #27ae60;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #2ecc71;
}

footer {
  background-color: #2c3e50;
  color: white;
  padding: 10px;
  text-align: center;
  position: absolute;
  bottom: 0;
  width: 100%;
}