diff --git a/test/markup/css/css_consistency.expect.txt b/test/markup/css/css_consistency.expect.txt
index 0f36f5e4f3..31ee17b143 100644
--- a/test/markup/css/css_consistency.expect.txt
+++ b/test/markup/css/css_consistency.expect.txt
@@ -63,3 +63,8 @@
   <span class="hljs-number">50%</span>  { <span class="hljs-attribute">margin-top</span>: <span class="hljs-number">60px</span> <span class="hljs-meta">!important</span>; }
   <span class="hljs-selector-tag">to</span>   { <span class="hljs-attribute">margin-top</span>: <span class="hljs-number">100px</span>; }
 }
+
+<span class="hljs-selector-tag">main</span> {
+  <span class="hljs-attr">--color</span>: red;
+  <span class="hljs-attribute">color</span>: <span class="hljs-built_in">var</span>(--color);
+}
diff --git a/test/markup/css/css_consistency.txt b/test/markup/css/css_consistency.txt
index e09f2cad3a..1dc3879b73 100644
--- a/test/markup/css/css_consistency.txt
+++ b/test/markup/css/css_consistency.txt
@@ -63,3 +63,8 @@ a[href*="example"] {}
   50%  { margin-top: 60px !important; }
   to   { margin-top: 100px; }
 }
+
+main {
+  --color: red;
+  color: var(--color);
+}
diff --git a/test/markup/less/css_consistency.expect.txt b/test/markup/less/css_consistency.expect.txt
index 8007197491..e60d0c8dfb 100644
--- a/test/markup/less/css_consistency.expect.txt
+++ b/test/markup/less/css_consistency.expect.txt
@@ -57,3 +57,8 @@
   <span class="hljs-comment">/* src: url(&quot;/fonts/OpenSans-Regular-webfont.woff2&quot;) format(&quot;woff2&quot;),
        url(&quot;/fonts/OpenSans-Regular-webfont.woff&quot;) format(&quot;woff&quot;); */</span>
 }
+
+<span class="hljs-selector-tag">main</span> {
+  <span class="hljs-attr">--color</span>: red;
+  <span class="hljs-attribute">color</span>: var(--color);
+}
diff --git a/test/markup/less/css_consistency.txt b/test/markup/less/css_consistency.txt
index 365b3c135c..26ed3b079e 100644
--- a/test/markup/less/css_consistency.txt
+++ b/test/markup/less/css_consistency.txt
@@ -57,3 +57,8 @@ a[href*="example"] {}
   /* src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"),
        url("/fonts/OpenSans-Regular-webfont.woff") format("woff"); */
 }
+
+main {
+  --color: red;
+  color: var(--color);
+}
diff --git a/test/markup/scss/css_consistency.expect.txt b/test/markup/scss/css_consistency.expect.txt
index 8007197491..e60d0c8dfb 100644
--- a/test/markup/scss/css_consistency.expect.txt
+++ b/test/markup/scss/css_consistency.expect.txt
@@ -57,3 +57,8 @@
   <span class="hljs-comment">/* src: url(&quot;/fonts/OpenSans-Regular-webfont.woff2&quot;) format(&quot;woff2&quot;),
        url(&quot;/fonts/OpenSans-Regular-webfont.woff&quot;) format(&quot;woff&quot;); */</span>
 }
+
+<span class="hljs-selector-tag">main</span> {
+  <span class="hljs-attr">--color</span>: red;
+  <span class="hljs-attribute">color</span>: var(--color);
+}
diff --git a/test/markup/scss/css_consistency.txt b/test/markup/scss/css_consistency.txt
index 365b3c135c..26ed3b079e 100644
--- a/test/markup/scss/css_consistency.txt
+++ b/test/markup/scss/css_consistency.txt
@@ -57,3 +57,8 @@ a[href*="example"] {}
   /* src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"),
        url("/fonts/OpenSans-Regular-webfont.woff") format("woff"); */
 }
+
+main {
+  --color: red;
+  color: var(--color);
+}
diff --git a/test/markup/stylus/css_consistency.expect.txt b/test/markup/stylus/css_consistency.expect.txt
index 8007197491..e60d0c8dfb 100644
--- a/test/markup/stylus/css_consistency.expect.txt
+++ b/test/markup/stylus/css_consistency.expect.txt
@@ -57,3 +57,8 @@
   <span class="hljs-comment">/* src: url(&quot;/fonts/OpenSans-Regular-webfont.woff2&quot;) format(&quot;woff2&quot;),
        url(&quot;/fonts/OpenSans-Regular-webfont.woff&quot;) format(&quot;woff&quot;); */</span>
 }
+
+<span class="hljs-selector-tag">main</span> {
+  <span class="hljs-attr">--color</span>: red;
+  <span class="hljs-attribute">color</span>: var(--color);
+}
diff --git a/test/markup/stylus/css_consistency.txt b/test/markup/stylus/css_consistency.txt
index 365b3c135c..26ed3b079e 100644
--- a/test/markup/stylus/css_consistency.txt
+++ b/test/markup/stylus/css_consistency.txt
@@ -57,3 +57,8 @@ a[href*="example"] {}
   /* src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"),
        url("/fonts/OpenSans-Regular-webfont.woff") format("woff"); */
 }
+
+main {
+  --color: red;
+  color: var(--color);
+}