It's `-webkit-text-size-adjust`. This property, at its original intent, was introduced as a way to tell Mobile Safari (and other WebKit mobile browsers) to not

It's `-webkit-text-size-adjust`. This property, at its original intent, was introduced as a way to tell Mobile Safari (and other WebKit mobile browsers) to not auto-adjust the font size on orientation change. However, there also exists `-apple-text-size-adjust` that used in several WebKit views in Apple softwares (e.g. Safari's RSS reader use `-apple-text-size-adjust` for its sidebar). At one point they deprecated `-apple` prefix for `-webkit` and the collision occurs. This is a bug[1][2] rather than expected behavior. They can't disable it right away because Apple softwares and Qt requires this "feature". The website is likely not the one to blame here. Update: looks like there's a new patch to fix this earlier this week. [1]: https://lists.webkit.org/pipermail/webkit-dev/2011-May/016865.html https://lists.webkit.org/pipermail/webkit-dev/2011-May/01686... [2]: https://bugs.webkit.org/show_bug.cgi?id=56543 https://bugs.webkit.org/show_bug.cgi?id=56543 [3]: https://bug-56543-attachments.webkit.org/attachment.cgi?id=117877 https://bug-56543-attachments.webkit.org/attachment.cgi?id=1...