Add dir="rtl"
to your HTML element to make the text right to left, e.g.
<html dir="rtl">
It's also a good idea to mention it's Arabic there as well:
<html dir="rtl" lang="ar">
You can also use the dir
attribute on elements: e.g.
<div dir="rtl">This is right to left</div>
That means if your site breaks if the whole page is rtl, you can just target little bits.