diff --git a/.stylelintrc.yml b/.stylelintrc.yml
index e64f42b..a8b96d2 100644
--- a/.stylelintrc.yml
+++ b/.stylelintrc.yml
@@ -25,5 +25,9 @@ rules:
   # Descending specificity false positives with SCSS nesting
   no-descending-specificity: null
 
+  # SCSS compiler does not support CSS4 space-separated color notation
+  color-function-notation: null
+  alpha-value-notation: null
+
   # Allow // single-line comments
   scss/double-slash-comment-empty-line-before: null
diff --git a/_sass/custom.scss b/_sass/custom.scss
index a4fae33..c21f930 100644
--- a/_sass/custom.scss
+++ b/_sass/custom.scss
@@ -572,7 +572,7 @@ summary.series-header {
 }
 
 .find-match {
-  background: rgb(204 34 0 / 25%);
+  background: rgba(204, 34, 0, 0.25);
   color: $text;
   border-radius: 1px;
 }