diff --git a/static/css/custom.css b/static/css/custom.css
index 0eddfe6..81a2d1f 100644
--- a/static/css/custom.css
+++ b/static/css/custom.css
@@ -61,6 +61,11 @@ body {
   transition: 400ms;
 }
 
-.header-green-custom :is(h1, h2, h3, h4, h5, h6) {
+.header-green-custom h1,
+.header-green-custom h2,
+.header-green-custom h3,
+.header-green-custom h4,
+.header-green-custom h5,
+.header-green-custom h6 {
   color: #00ad8e;
 }
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