body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0f0f0f;
  color: #ffffff;
}

nav {
  background: #111;
  padding: 15px;
  display: flex;
  justify-content: space-between;
}

nav a {
  color: #fff;
  margin-right: 15px;
  text-decoration: none;
}

.hero {
  height: 80vh;
  background: url('https://images.unsplash.com/photo-1558611848-73f7eb4001a1') no-repeat center/cover;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  background: rgba(0,0,0,0.6);
  padding: 20px;
}

.section {
  padding: 40px;
}

.card {
  background: #1c1c1c;
  padding: 20px;
  margin: 15px;
  border-radius: 10px;
}

.grid {
  display: flex;
  flex-wrap: wrap;
}

img {
  width: 100%;
  border-radius: 10px;
}