I did the following: 1. clearing cache (press Ctrl + F5). 2. remove css file and then upload again. 3. checked updated css file manually. 4. I remove browser data from chrome setting
From the above test it should load updated css. but it is being loaded old css. Here is the old link: http://demo.voberhat.com/wp-content/themes/bootstraplight/style.css?ver=4.9.6
I can see update at : http://demo.voberhat.com/wp-content/themes/bootstraplight/style.css
Meaning version change may be the trick. But why should I change version just to add one line css? Any idea?