[17] CSS Extensions for Multimodal Interaction ( (2004-12-15 04:05:11 +09:00 版)) http://www.w3.org/People/Raggett/css-mmi/#next

[18] CSS Extensions for Multimodal Interaction ( (2004-12-15 04:05:11 +09:00 版)) http://www.w3.org/People/Raggett/css-mmi/#state

[1] Custom State Pseudo Class (2019-12-12 22:59:19 +09:00) https://wicg.github.io/custom-state-pseudo-class/

[2] WICG/custom-state-pseudo-class (2019-12-18 17:15:39 +09:00) https://github.com/WICG/custom-state-pseudo-class