body {
  font-family: "Trebuchet MS", sans-serif;
  background: #f8f9fa;
  color: #333;
  margin: 0;
  padding: 0;
}

header {
  background: #88b04b;
  color: white;
  padding: 1em;
  text-align: center;
}

nav a {
  margin: 0 10px;
  color: white;
  text-decoration: none;
}

button {
  background: #88b04b;
  color: white;
  padding: 0.5em 1em;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #6e8d3a;
}