When we devlop, we code not only with the biasses of our own likes and dislikes, but also of our abilities and inabilities.

• 4G connection and 1GB internet
• Visual capabilites (size, color, weight)
• Language
• Familiarity with web conventions (good and bad)
• Auditory availability (presence of sight, and proper environment)
• Dexterity (presence of keyboard or mouse)

With a few small changes to the markup and styling of web pages, we can make for a more inclusive web - with wonderful UX benefits.