Here are some links to various topics.
Firefox tabs
Modify Firefox and add multiple rows of tabs plus modify the look of the email program called Thunderbird.
Make the text bigger and the buttons colorful - link
html basics
html basics - link
Import fonts - Use different fonts
Import fonts - Use different fonts - link
Templates for website - Responsive
basic grid_generic
pre_code grid
How to Center Images & Text
different_size_text_on_same_line
1col_3row_generic
1col_4row_generic
2col_4row_generic
2equel_col_4row_generic
3col_4row_generic
4col_5row_generic