The size of the target for pointer inputs is at least 44 by 44 CSS pixels except when:
The purpose of this success criterion is to aid users who lack the ability or dexterity to activate small targets with a pointer device.
It differs from 2.5.8 primarily in having a larger minimum size for the target area.
How to Meet
Except for the cases listed in the success criterion text, authors need to ensure that all target areas (buttons, etc.) are at least 44 pixels by 44 pixels in dimensions
The following knowledge base pages provide more information about how to address this success criterion for publishing content: