body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.header {
  background-color: #000;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
}

.header h1 {
  margin: 0;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 15px;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

.intro {
  background-color: #f4f4f4;
  padding: 50px 20px;
  text-align: center;
}

.btn-primary {
  display: inline-block;
  background-color: #000;
  color: #fff;
  padding: 10px 20px;
  margin-top: 20px;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
}

.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 30px 20px;
  background-color: #fff;
}

.feature {
  flex: 1 1 250px;
  margin: 10px;
  background-color: #eef;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
}

.footer {
  background-color: #000;
  color: #fff;
  text-align: center;
  padding: 20px;
}