darkened input borders for accessibility against white page color

Change-Id: I0ae704746bb982ba5d64222d132bb656fd6ab684
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/elements/content-search.scss b/app/common/styles/elements/content-search.scss
index b1aae36..3fa94f1 100644
--- a/app/common/styles/elements/content-search.scss
+++ b/app/common/styles/elements/content-search.scss
@@ -13,7 +13,7 @@
 
   #content__search-input {
     margin: 0;
-    border: 1px solid $medgrey;
+    border: 1px solid $input-border;
     padding-left: 40px;
     padding-right: 5px;
     &:focus {