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

h1 {
    color: #333;
    font-family: Arial, sans-serif;
    font-size: 4rem;
}

h2 {
    color: #333;
    font-family: Arial, sans-serif;
    font-size: 3rem;
}

h3 {
    color: #333;
    font-family: Arial, sans-serif;
    font-size: 2.5rem;
}

h4 {
    color: #333;
    font-family: Arial, sans-serif;
    font-size: 2rem;
}

p {
    color: #333;
    font-family: Arial, sans-serif;
    font-size: 1rem;
}

.code {
  font-family: monospace;
  background-color: #f4f4f4;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
  display: inline-block;
}