body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
  text-align: center;
}

header {
  background: #111;
  color: white;
  padding: 10px;
}

button {
  padding: 10px 15px;
  margin: 5px;
  font-size: 16px;
  cursor: pointer;
}

canvas {
  border: 2px solid #000;
  margin-top: 10px;
  max-width: 100%;
}

#analysisText {
  margin-top: 15px;
  font-weight: bold;
}