The Accessibility (A11Y) Style Guide is a pattern library focused on accessibility.
The A11Y style guide comes with pre-populated accessible components that include helpful links to related tools, articles, and WCAG guidelines to make your site more inclusive.
These components also serve as a guide for both HTML markup and SCSS/CSS code, to inform designers, front-end and back-end developers at every stage of the website’s creation.
You can use the Style Guide as a reference, as a base for your own style guide or for creating your own accessible components.
You can find the Style Guide here: https://a11y-style-guide.com/style-guide/