body {
  font-family: sans-serif;
  max-width: 700px;
  margin: 2em auto;
  background: #f8f8f8;
  padding: 2em;
  border-radius: 12px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}
input, select, button {
  margin: .5em 0;
  padding: .3em .6em;
  font-size: 1em;
}
button {
  background: #0073e6;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
button:hover {
  background: #005bb5;
}