fix(FullscreenImage): fix close button (#1158)

Author: aeksandla

src/components/FullscreenImage/FullscreenImage.scss

@@ -55,7 +55,7 @@ $closeButtonSize: 36px;
         opacity: 0;
         transition: 0.3s;
 
-        &:focus {
+        &_visible {
             opacity: 1;
         }
     }