body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: black;
  color: gold;
}
header {
  background: black;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid gold;
}
nav a {
  color: gold;
  text-decoration: none;
  margin-left: 20px;
}
nav a:hover {
  text-decoration: underline;
}
h1, h2 {
  color: gold;
}
.portfolio .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}
.portfolio img {
  width: 100%;
  height: auto;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.portfolio img:hover {
  transform: scale(1.05);
}