title: Font size medium in css
body: <p>How does the <code>font-size</code> <em>medium/small/large</em> work in css? If the  css has a <code>font-size:11px</code>, then what is the <code>font-size:medium</code> for other elements, does it depend on the  font size, or is it unrelated to  font size?</p>