Content on Hover or Focus
Where receiving and then removing pointer hover or keyboard focus triggers additional content to become visible and then hidden, the following are true: Dismissible, Hoverable, Persistent.
WCAG 2.1 Understanding 1.4.13
Name, Role, Value
For all user interface components (including but not limited to: form elements, links and components generated by scripts), the name and role can be programmatically determined; states, properties, and values that can be set by the user can be programmatically set; and notification of changes to these items is available to user agents, including assistive technologies.
WCAG 2.1 Understanding 4.1.2
Label in Name
For user interface components with labels that include text or images of text, the name contains the text that is presented visually.
WCAG 2.1 Understanding 2.5.3
Non-Text Contrast
The visual presentation of the following have a contrast ratio of at least 3:1 against adjacent color(s): User Interface Components, Graphical Objects.
WCAG 2.1 Understanding 1.4.11
Meaningful Sequence
Present content in a meaningful order. This ensures that the content makes sense when read by a screen reader or other assistive technology, even when styles are turned off.
WCAG 2.1 Understanding 1.3.2
Info and Relationships
Ensure information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text. This means use proper HTML elements to structure your content, so it makes sense when read by assistive technology.
WCAG 2.1 Understanding 1.3.1