Can anyone please help me remove underline on image caption links?

Site URL: https://www.bloomingmagnoliasblog.com/

I have tried all codes I have found in this forum and nothing seems to work in removing the underline from the links on photos. I'm on Brine, Rally template, on 7.0 version. 

Site: Blooming Magnolias Blog

Hi. Add to Design > Custom CSS

/* remove poster underline */
.design-layout-poster a {
    border: none !important;
}

Thanks so much - it worked! And I also figured why other codes didn't! You're the best!