- Figures & captions
- A pinned-down menu
- Indented paragraphs
- Alternative style sheets
- A confetti menu
- Getting rid of colored scrollbars (user style sheets)
- Even/odd: coloring every other row
- A tabbed interface
- A chart comparing font styles
- Horizontal and vertical centering
- Boxes with drop shadows
- Text shadows
- Rounded boxes and unsharp shadows
Figures & captions
HTML doesn't have an element that allows to insert a figure with a caption. It was once proposed (see HTML3), but never made it into HTML4. Here is one way to simulate such a figure element: