body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
}
header, footer {
  background: #222;
  color: white;
  padding: 10px;
}
button {
  margin: 10px;
  padding: 10px 20px;
  background: dodgerblue;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}
button:hover {
  background: royalblue;
}
textarea {
  width: 300px;
  height: 100px;
}