“#1” and “1” can be any numbers, but probably makes sense to do it sequentially if they plan on having anchors.
There is an example at the top of the gallery page on this website.
2) ACCEPTED FILE TYPES
3) BACKGROUND COLOUR
[OPEN BRACKET] div style=”background-color: #167382;”[CLOSE BRACKET] — to start a section with background colour.
Colour codes can be found here: http://www.w3schools.com/tags/ref_colorpicker.asp
[OPEN BRACKET] /div [CLOSE BRACKET] — to end a section with background colour