Css not showing up on button

Hi I am trying to add a shadow to my SEE WHAT WE DO button on my site bestimagingsolutions.com but while it shows up when I am editing my crelly slider slides it doesn’t show up on my website it shows the text with no shadow effect at all. How can I get this to show? Thank you.

Hello there,

I didn’t fint “See What Wee Do” on your homepage. Did you remove it?

Regards,
Kharis