Success Criterion 2.5.5 - Level AAA
The size of the target for pointer inputs is at least 44 by 44 CSS pixels except when:
The target is available through an equivalent link or control on the same page that is at least 44 by 44 CSS pixels;
The target is in a sentence or block of text;
The size of the target is determined by the user agent and is not modified by the author;
A particular presentation of the target is essential to the information being conveyed.