With every complex feature in CSS, you’ll always have that turning point when you see how truly powerful the feature is. And, believe it or not, my personal turning point with ems came long after I wrote a pun-filled introduction to the subject. Although I understood ems fairly well by that point, I really started to see how powerful they are when I read Simurai’s post on Medium called Sizing (Web
![The Power of em Units in CSS — SitePoint](https://cdn-ak-scissors.b.st-hatena.com/image/square/e3fa475ce943a48db21acc256784b5c7fc17ab77/height=288;version=1;width=512/https%3A%2F%2Fwww.sitepoint.com%2Fwp-content%2Fthemes%2Fsitepoint%2Fassets%2Fimages%2Ficon.html-css.png)