上QQ阅读APP看书，第一时间看更新
Headline that tells you something
Subtitle that adds context and poses more questions
This is body copy that expands on the story by adding detail progressively through the copy. Keep reading to the end to learn less and less important detail.
The exact same technique can be employed in user interface design to great effect.
Design blog 'A List Apart' uses typographic hierarchy to excellent effect on its article list
Tip
Pro-tip: Find a balance and don't overdo it. If too many elements on the page are large, then they lose any sense of hierarchy and emphasis.