У вашего броузера проблема в совместимости с HTML5
Apple yesterday introduced the newest version of iOS, iOS 12, which is currently available to developers as part of a beta test.
We thought we'd take a closer look at iOS 12 to give MacRumors readers who aren't yet able to download the beta an idea of what to expect from the new software.
Read more - https://www.macrumors.com/2018/06/05/hands-on-with-ios-12-update/