--- title: Accessibility ---
Care about accessibility or want to contribute? Submit a Pull Request or get into the conversation on GitHub.
*** ## Basic Concepts - OverviewThe most common impairments for web users are those with problems seeing, hearing or a physical inability to use a mouse. For that reason, the site must be navigatable by keyboard. Most commonly the tab key is used to tab through the content. For a vision impaired person will have a screenreader installed that reads the content out loud. We used Chromevox to test with. You can find a list of popular screen readers below in the resource list.
### How to Test a Website’s Keyboard AccessibilityOn a desktop or laptop in Firefox, IE, Chrome, or Safari, click into the browser address bar.
Take your hand off your mouse and use only your keyboard. Using the Tab button, navigate until you’ve reached the link below. (You can use Shift+Tab to navigate back one step.)
Give the person the ability to skip the navigation at the top of the page. If you have menu with 40 links, you can imagine how long it would take someone to tab through all that. Here's one way to do it:
Note: A person who can see may be slightly confused that their focus is off screen. This is a minor compromise for this method.
*** ### Nested HeadingsWhen nesting headings `