I am using LS 3.17.13, an extended theme of fruity (I didn't touch the progress bar css code at all). Even though I chose to show progress bar in the setting, it doesn't show up in my survey. If I change back to the fruity theme, the progress bar works normally. I don't know what cause the problem.

The survey is active at chatluongcuocsong.limequery.com/399666

Please help.

Thank you very much!

You have this CSS rule in your custom.css file at line 320. Remove it and the progress bar will be shown.

Thank you very much Tony! May I ask another small question: how can I hide that progress bar at the first page of the survey (the welcome page)?

In the theme editor, add this to the end of welcome.twig:

It works perfectly. Thank you very much Tony!