diff --git a/_sass/custom/custom.scss b/_sass/custom/custom.scss
index 4ea82bf07b4..94ee9155253 100755
--- a/_sass/custom/custom.scss
+++ b/_sass/custom/custom.scss
@@ -128,7 +128,7 @@ img {
   border: 1px solid $grey-lt-300;
 }
 
-// Note, tip, and warning blocks
+// Note, tip, important, and warning blocks
 %callout {
   border: 1px solid $grey-lt-300;
   border-radius: 5px;
@@ -147,6 +147,11 @@ img {
   border-left: 5px solid $green-100;
 }
 
+.important {
+  @extend %callout;
+  border-left: 5px solid $yellow-000;
+}
+
 .warning {
   @extend %callout;
   border-left: 5px solid $red-100;