h1 {
    font-size: 3em;
}
h2 {
    font-size: 2.5em;
}
h3 {
    font-size: 2em;
}
h4 {
    font-size: 1.5em;
}
p {
    font-size: 1.2em;
    line-height: 1.6;
}
a {
    color: #3498db;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
ul, ol {
    margin-left: 20px;
    line-height: 1.6;
}
blockquote {
    border-left: 4px solid #ccc;
    padding-left: 10px;
    color: #666;
    font-style: italic;
}
code {
    font-family: 'Courier New', Courier, monospace;
    background-color: #f4f4f4;
    padding: 2px 4px;
    border-radius: 4px;
}
pre {
    background-color: #f4f4f4;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
}
hr {
    border: none;
    border-top: 1px solid #eee;
    margin: 20px 0;
}