Bug: EBI black bar vertical spacing with vf-stack (#1724)

* Bug: EBI black bar vertical spacing with vf-stack

No space between EBI black bar and a hero

* Update CHANGELOG.md

components/ebi-header-footer/CHANGELOG.md

+### 2.1.1
+
+* No space between EBI black bar and a hero.
+* https://github.com/visual-framework/vf-core/pull/1724
+
 ### 2.1.0
 
 * Fix readme for proper display in component library docs.

components/ebi-header-footer/ebi-header-footer--embl-selector.scss

 // ebi-header-footer--footer
 // Custom tag class for Foundation-based EBI framework
 
-/// Classes to theme the embl dropdown selector for the .masthead-black-bar
+// Classes to theme the embl dropdown selector for the .masthead-black-bar
 
 &.masthead-black-bar {
   li.embl-selector {
@@ -108,3 +108,8 @@
     nav ul.menu li a { padding-right: .35rem; padding-left: .35rem;}
   }
 }
+
+// no space between ebi black bar and hero
+.vf-stack > .masthead-black-bar.vf-u-fullbleed ~ .vf-hero {
+  margin-top:unset !important;
+}