diff --git a/_includes/warning.html b/_includes/warning.html
index 3c9382e159..01b27eb8ef 100644
--- a/_includes/warning.html
+++ b/_includes/warning.html
@@ -1 +1 @@
-<p class="warning">This version of the OpenSearch documentation is no longer maintained. For the latest version, see the <a href="{{ site.url }}/docs{{ page.url }}">current documentation</a>. For information about OpenSearch version maintenance, see <a href="https://opensearch.org/releases.html">Release Schedule and Maintenance Policy</a>.</p>
\ No newline at end of file
+<p class="unsupported-version-warning">This version of the OpenSearch documentation is no longer maintained. For the latest version, see the <a href="{{ site.url }}/docs{{ page.url }}">current documentation</a>. For information about OpenSearch version maintenance, see <a href="https://opensearch.org/releases.html">Release Schedule and Maintenance Policy</a>.</p>
\ No newline at end of file
diff --git a/_sass/custom/custom.scss b/_sass/custom/custom.scss
index bc4ae92188..2e917702bf 100755
--- a/_sass/custom/custom.scss
+++ b/_sass/custom/custom.scss
@@ -155,6 +155,12 @@ img {
   border-left: 5px solid $red-100;
 }
 
+.unsupported-version-warning {
+  @extend %callout;
+  border-left: 5px solid $red-100;
+  background-color: mix(white, $red-100, 80%);
+}
+
 // Labels
 .label,
 .label-blue {