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Not all browsers will render web pages in the same way, and that is ok – but critical content should remain available and functional. But the level of support is not universal. Tiered support model is suggested (Fully, Mostly, Partially, Untested) (there is a difference between supporting and testing proactively).
Inspired by Browser support standards by Aviva, Based on Worldwide browsers' usage data and Reckitt statistics provided below, Support matrix was built.
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