Move the header tagline styles to _common.scss

website/themes/uppy/source/css/_common.scss

@@ -328,6 +328,10 @@ hr {
   flex: 1;
   color: $color-gray;
   display: none;
+  transition: all ease-in-out 0.3s;
+  opacity: 0;
+
+  &.is-visible { opacity: 1; }
 
   @media #{$screen-medium} {
     margin: 0;
@@ -340,6 +344,10 @@ hr {
   }
 }
 
+.MainHeader-taglineList {
+  display: none;
+}
+
 /**
 * MainMenu
 */

website/themes/uppy/source/css/_index.scss

@@ -136,17 +136,6 @@
   }
 }
 
-.MainHeader-tagline {
-  transition: all ease-in-out 0.3s;
-  opacity: 0;
-
-  &.is-visible { opacity: 1; }
-}
-
-.MainHeader-taglineList {
-  display: none;
-}
-
 .GetStartedBtn {
   font-size: 1.2em;
   text-decoration: none;