2.1.1 Keyboard and 2.1.2 No Keyboard Trap are level A success criteria in the Web Content Accessibility Guidelines (WCAG). They are related to the use of keyboards on websites.
2.1.1 and 2.1.2: Keyboard and No Keyboard Trap

The WCAG specification
2.1.1 Keyboard and 2.1.2 No Keyboard Trap are level A success criteria in the Web Content Accessibility Guidelines (WCAG). They are related to the use of keyboards on websites.
When we talk about focus, we are referring to the currently selected element in a graphical user interface, known as a GUI. Correct focus and reading order is an important aspect of having a digitally accessible website or app.
This year marks the 21st anniversary of WCAG, which have evolved into the gold standard for organisations across the world that want to ensure their websites, apps and digital content are fully accessible to all users. Let’s go on a journey through the history of WCAG.
The Web Content Accessibility Guidelines are a series of digital accessibility requirements published by the W3C, the main international standards organisation for the Internet. The WCAG, however, are not a static document but are regularly updated to reflect changes in technologies.
Info and Relationships is a Level A success criterion and states that information, structure, and relationships conveyed through presentation can be programmatically determined or are available in text.
Videos are considered one of the best ways for organisations to engage their users: a well-made video can tell a story that sticks in someone’s memory. But videos shouldn’t just be well-made, but also accessible, so that everyone who watches it can understand it.