Custom CSS rule in theme.css are being ignored

[msmafra]

Hello there!

I added a simple CSS rule at the end of the theme.css (Debut Theme) file, but the class I created is being ignored on the store.

Tried like this:

.semunderline {text-decoration: none;}

Like this:

.semunderline a:hover, .semunderline a:focus, .semunderline a:link {text-decoration: none;}

like this:

div.semunderline a {text-decoration: none;}

like this:

span.semunderline a {text-decoration: none;}

like this:

div.semunderline p a {text-decoration: none;}

like this:

span.semunderline p a {text-decoration: none;}

[Zworthkey]

Hii, @msmafra 
Kindly share your store URL and a screenshot so,
I can solve it perfectly.
Thank You.