body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background-color: #f5f5f5;
}
h1,
h2 {
  color: #333;
  text-align: center;
}
.container {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}
.upload-area {
  border: 2px dashed #ccc;
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  margin: 20px 0;
  cursor: pointer;
  transition: background-color 0.3s;
}
.upload-area:hover {
  background-color: #f9f9f9;
}
.upload-area.active {
  border-color: #4caf50;
  background-color: #f0f8f0;
}
.controls {
  margin: 20px 0;
}
.image-previews {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}
.image-preview {
  flex: 1;
  min-width: 300px;
  text-align: center;
}
.image-preview canvas {
  max-width: 100%;
  border: 1px solid #ddd;
  border-radius: 4px;
}
label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}
input[type="color"],
input[type="range"] {
  width: 100%;
  padding: 8px 0;
}
button {
  background-color: #4caf50;
  color: white;
  border: none;
  padding: 10px 15px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s;
  margin-right: 10px;
}
button:hover {
  background-color: #45a049;
}
button:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
}
.color-preview {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 1px solid #000;
  vertical-align: middle;
  border-radius: 3px;
  margin-left: 5px;
}
.instructions {
  background-color: #f9f9f9;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}
.instructions ol {
  margin-left: 20px;
  padding-left: 0;
}
.instructions li {
  margin-bottom: 8px;
}