body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
}
header {
  background-color: #2c3e50;
  color: white;
  padding: 1rem 0;
}
#pixel-grid {
  display: grid;
  grid-template-columns: repeat(100, 5px);
  grid-template-rows: repeat(100, 5px);
  gap: 1px;
  justify-content: center;
  margin: 1rem auto;
  max-width: 600px;
}
.pixel {
  width: 5px;
  height: 5px;
  background-color: #ddd;
  cursor: pointer;
}
.pixel.selected {
  background-color: #4CAF50;
}
.pixel.purchased {
  border: 1px solid #000;
  background-size: cover;
}
.editor {
  margin: 2rem;
}
input[type="text"] {
  width: 300px;
}