body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #111;
  color: #fff;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: #fff;
  margin-left: 1rem;
  text-decoration: none;
}

.hero {
  padding: 2rem;
  background: #e0f7fa;
  text-align: center;
}

.features {
  display: flex;
  justify-content: space-around;
  padding: 2rem;
}

.features div {
  background: white;
  padding: 1rem;
  border-radius: 6px;
  width: 30%;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

footer {
  background: #111;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}