diff --git a/scss/core/_variables.scss b/scss/core/_variables.scss
index 266065e8..4380ac69 100644
--- a/scss/core/_variables.scss
+++ b/scss/core/_variables.scss
@@ -3,9 +3,11 @@
  * ===================================================
  */
 
-$gap:               .8rem; // 8px at 10px $em-base
-$topbar-height:     4.8rem;
-$icon-size-small:   2.4rem;
+$gap:                     0.8rem; // 8px at 10px $em-base
+$topbar-height:           4.8rem;
+$icon-bar-width:          4.0rem;
+$icon-size-small:         2.4rem;
+$hover-transition-time:   0.2s;
 
 /*
  * USWDS Variables