lencr.org - Let's Encrypt

Elements must meet minimum color contrast ratio thresholds

Ensure the contrast between foreground and background colors meets WCAG 2 AA minimum contrast ratio thresholds

Links must have discernible text

Ensure links have discernible text

Links must have discernible text

Ensure links have discernible text

Links must have discernible text

Ensure links have discernible text

Links must have discernible text

Ensure links have discernible text

Heading levels should only increase by one

Ensure the order of headings is semantically correct

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination

Ensure landmarks are unique

All page content should be contained by landmarks

Ensure all page content is contained by landmarks