As a newcomer, I recently created an App using jQuery Mobile, but I've been advised to rebuild it with Sencha Touch. However, I'm finding it challenging to grasp Sencha Touch. Should I utilize my developer tools to modify their extensive CSS file? Should I include HTML and classes in each .js page like cls: 'whatev',
and then apply my CSS? Should I make changes to the SCSS file?
I recognize that my question may seem basic, but I would greatly appreciate any guidance before I proceed. Thank you.