body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  text-align: center;
  padding: 1rem;
  background: #222;
  color: white;
}

nav {
  text-align: center;
  margin: 1rem 0;
}

button {
  background: #007bff;
  border: none;
  padding: 10px 20px;
  margin: 0 10px;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 1rem;
}

.code-block {
  background: #272822;
  color: #f8f8f2;
  padding: 1rem;
  border-radius: 8px;
  position: relative;
  margin-bottom: 2rem;
  overflow-x: auto;
  white-space: pre;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #f92672;
  border: none;
  color: white;
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 4px;
}


.code-block pre {
  font-size: 14px;
  line-height: 1.5;
}