See Conformance Requirement 5: Non-Interference. Understanding 2.3.1 Show Hide techniques and failures for 2.3.1 Sufficient Advisory Failures Sufficient Techniques for Success Criterion 2.3.1 Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques. G19: Ensuring that no component of the content flashes more than three times in any 1-second period G176: Keeping the flashing area small enough G15: Using a tool to ensure that content does not violate the general flash threshold or red flash threshold Back to top 2.3.2 Three Flashes Level AAA Web pages do not contain anything that flashes more than three times in any one second period. Understanding 2.3.2 Show Hide techniques and failures for 2.3.2 Sufficient Advisory Failures Sufficient Techniques for Success Criterion 2.3.2 Note: Other techniques may also be sufficient if they meet the success criterion.