It’s possible you will get some CSS conflicts due to Onsen UI’s class names. We are looking at fixing that in a future version but for the moment if your class name is the same as an Onsen UI, you may have a collision. Please see: https://github.com/OnsenUI/OnsenUI/issues/2645 If you have any ongoing problems, you may also find it useful to ask for help at the Onsen UI community discord: https://discord.gg/JWhBbnE sergei-krylov created this issue in OnsenUI/OnsenUI open Scope components css classes into namespace #2645