Answer
Jul 20, 2016 - 03:36 PM
The answer to this question can end deep in developer debates pertaining to various browser capabilities and implementation. Ultimately percentages and em’s are scalable units of measure while points and pixels are fixed dimensions. In the world of responsive web design and various devices accessing your pages, the more flexible your unit of measure is, the better. See this post for more: http://kyleschaeffer.com/development/css-font-size-em-vs-px-vs-pt-vs/
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