Today, websites are not limited to Roman context which typically read from left to right. The number of websites utilising the content where it is read from right to left is undeniably increasing, for example, content in Arabic, Persian or Hebrew.
While the techniques used to develop RTL (right-to-left) websites are still largely misunderstood, Ahmad Alfy sheds some light on the problems and tricks he had been using to build RTL websites. A bit of TL:DR, involving understanding the semantics and changing the stylesheet before proceeding to the implementation, but highly useful.