はてなブックマーク

1. Perceivable Information and user interface components must be presentable to users in ways they can perceive. 1.1 Text Alternatives Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language. 1.1.1 Non-text Content 1.2 Time-based Media Provide alternatives for time-based media. 1.2.