CSS nested lists marker list item

Use CSS counters for display at the start of each section. Then show all the nested counters for each item. So, display "1.2", not simply "2."

These videos for a lecture series set up in sequence so you can easily learn web development skills.

Music attribution:
Kevin MacLeod - Rollin at 5 - 210 - full
/Kevin_MacLeod/Best_of_2014_1461/Rollin_at_5/
CC 3.0 standard-license

Image Attribution:
Mathieu Stern