Texas

All users, regardless of disability, should be able to read, navigate, and contribute to Wikipedia easily. Therefore, when editing articles:

Do use high contrast and color-blind friendly color schemes.
Do provide alt text and a caption for most images.
Do provide a text description of any charts or diagrams.
Do nest section headings sequentially.
Do create correctly structured tables.
Do encase non-English words or phrases in {{lang}}.
Do ask any accessibility-related questions at WikiProject Accessibility's talk page.

Don't impede the ability to distinguish links from regular text.
Don't use scrolling lists or collapsible sections to conceal content. (See exceptions in the Manual of Style).
Don't use color as the only means of conveying information.
Don't use tables for layout—use <div> blocks instead.
Don't leave blank lines between list items.
Don't use Unicode characters as icons or images.
Don't sandwich text between two images or, unless absolutely necessary, use fixed image sizes.

Wikipedia dos and don'ts
Encyclopedia content	Accessibility Biographies Biographies (living) Categorization Disambiguation Images Leads Links Lists References Tables Titles (of articles)
Collaboration	Consensus Talk
Simple rule set - Simple style manual - Style tips - Wikitext cheatsheet

See also