Fieldset and legend formatting demo

See the accompanying article at

This is a fieldset
  1. Headgear
  2. Waistcoat?

This is a section

  1. Bacon and brie
  2. Chicken, chipolata, and cranberry
  3. Ham and cheese with NO FUCKING SALAD RUBBISH
  4. Selleck waterfall
This is a fieldset with a very long caption and a limited width
"I'm in the middle of fifteen things, all of them annoying."