body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
  background: #f9f9f9;
}
header, nav, footer {
  text-align: center;
  padding: 1rem;
  background: linear-gradient(90deg, #4e54c8, #8f94fb);
  color: white;
}
nav a {
  margin: 0 10px;
  color: white;
  text-decoration: none;
}
.hero {
  text-align: center;
  padding: 2rem;
  background: #fff;
}
.features {
  display: flex;
  justify-content: space-around;
  margin: 2rem 0;
}
.features div {
  background: #fff;
  padding: 1rem;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}
button {
  padding: 10px 20px;
  background: #4e54c8;
  color: white;
  border: none;
  cursor: pointer;
}
button:hover {
  background: #8f94fb;
}