body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}
header, footer {
  background: #111;
  color: #fff;
  padding: 1em;
  text-align: center;
}
section, form {
  padding: 2em;
  background: #fff;
  margin: 2em;
  border-radius: 8px;
}
input, textarea, button {
  display: block;
  margin: 1em 0;
  width: 100%;
  padding: 0.5em;
}
button {
  background: #111;
  color: #fff;
  border: none;
  cursor: pointer;
}