After finding accessible collapsible content help at  http://tinyurl.com/b4e3yke , I simply must follow @filamentgroup

tabindex=0 allows element to receive keyboard focus. #a11ySummit #a11y

Color contrast - minimum of 4.5:1 ratio for all text. #a11y #a11ysummit

Linked images MUST have alt text. #a11y #a11ysummit

#a11ysummit #a11y Useful text alternatives: http://dev.w3.org/html5/alt-techniques/

You can't reliably detect assistive tech devices on the Web. #a11ySummit #a11y

@aral On behalf of daughters AND sons:  http://aralbalkan.com/notes/on-false-dichotomies-and-diversity/ …

#a11y #webaim Dynamic content - please set focus for keyboard and screen reader users. Vital.

@webaim on Spam-free accessible forms: http://t.co/uECGODhK #stopcaptcha #a11y

There is only one place where accessibility happens: The code. #a11y #webdev http://t.co/z8RQi1Sl

#A11y not tech conformance or policy compliance... only ... disabled using websites as intended for non-disabled. http://t.co/krkGjrgR

#a11ysummit Focus on the people! @featherstone

#a11ysummit The continual study of Web #accessibility may keep me from getting Alzheimer's.

@redcrew Also title attribute is not consistently recognized by screen readers. #a11ysummit

Fight the "right" fights. #a11ysummit

@jared_w_smith Don't modify element that has focus. #a11ysummit

Free site certification by WebAIM. @jared_w_smith #a11ysummit

Web site will always be inaccessible to someone. Need continual improvement. #a11ysummit

Check out Read Regular typeface, created for dyslexia. #a11ysummit

Via @mattmay Design for our future selves. (Lower vision, etc.) #a11y #a11ysummit