* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #f0f0f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.controls {
  margin-bottom: 20px;
}

.controls label {
  font-size: 1rem;
  margin-right: 10px;
}

#brushSize {
  margin-right: 20px;
}

canvas {
  border: 2px solid #333;
  background-color: #fff;
  cursor: crosshair;
}

button {
  padding: 10px 20px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #0056b3;
}