Prevent tabstop on A element (anchor link) in HTML
Some browsers support the tabindex="-1" attribute, but not all of them, since this is not a standard behaviour.
Modern, HTML5 compliant, browsers support the [tabindex] attribute, where a value of -1 will prevent the element from being tabbed to.
If the value is a negative integer
The user agent must allow the element to be focused, but should not allow the element to be reached using sequential focus navigation.