CSS code for changing bold font-weight not working

I use the font Cormorant in weight 600. 

The Cormorant I used for my paragraphs is already bold, but I need to make this font very bold when I want bold text to see the difference.

I added the following code to do so, but I didn't see any difference:

strong{

font-weight: 900! important;

}

Any suggestion would be greatly appreciated.🙏

@Chrystele Would it be possible to share your site URL so I can take a look? Thanks!

Hi Lesum, 

my website URL is

https://www.frencholistic.com/

The section is on the homepage.