Scss Styles Not Reflecting

I am using 9.17 version of mendix. I tried styling of my app through the scss. But It didnt reflect on the UI. Can  anyone give me a solution for this issue.  (I tried adding styles in theme and also in themesource folder,nothing worked for me).
1 answers

use Css file instead of SCSS

place your style file in theme/web 

and import in main.scss without file extension. (eg. @import "style";)

also make sure after saving your file  click  “synchronize app directory”  (F4 key)