body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f6f8;
  color: #333;
}

header {
  background: #0a74da;
  color: white;
  padding: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}

.tool {
  background: white;
  margin: 20px auto;
  padding: 20px;
  max-width: 700px;
  text-align: center;
  border-radius: 8px;
}

canvas {
  max-width: 100%;
  margin-top: 10px;
}

button {
  background: #0a74da;
  color: white;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 5px;
}

#ad, .ad-box {
  background: #e2e2e2;
  text-align: center;
  padding: 15px;
  margin: 20px;
}

footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 15px;
}

footer a {
  color: #ccc;
  margin: 0 5px;
}