body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f3f3f3;
}
header {
  background: #fff;
  padding: 10px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}
nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #333;
}
.hero {
  background: #666;
  color: white;
  text-align: center;
  padding: 40px 20px;
}
.hero .btn {
  display: inline-block;
  background: #00775f;
  color: white;
  padding: 10px 20px;
  margin-top: 20px;
  text-decoration: none;
}
.tutorials, .brushes, .footer-note {
  padding: 40px 20px;
  text-align: center;
}
.card-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}
.card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  width: 280px;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}
.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 4px;
}
.card .btn {
  display: inline-block;
  background: #00775f;
  color: white;
  padding: 8px 16px;
  margin-top: 10px;
  text-decoration: none;
}
footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 10px;
}