While creating website content it is crucial to consider accessibility. There are a few basic steps that should be followed in order to assure your content is accessible:
Add built-in Headings to document and do not skip numbers (e.g. jumping from Heading 1 to Heading 3)
Use built-in List options (e.g. bullets or numbers)
Add Alt Text for all images
Make all links descriptive and don't use full url or "click here"
Defined Table Headers and simplified Tables as much as possible