diff --git a/testing/web-platform/tests/css/css-multicol/multicol-span-all-015.html b/testing/web-platform/tests/css/css-multicol/multicol-span-all-015.html
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index 000000000000..041c211b855e
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+++ b/testing/web-platform/tests/css/css-multicol/multicol-span-all-015.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-multicol-1/#spanning-columns">
+<link rel="help" href="https://www.w3.org/TR/css-break-3/#break-margins">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div style="columns:2; column-gap:0; width:100px; background:red;">
+  <div style="height:30px;"></div>
+  <div style="height:30px; background:green;"></div>
+  <div>
+    <div style="column-span:all; height:40px; background:green;">
+      <div style="width:50px; height:40px; background:red;"></div>
+    </div>
+  </div>
+  <div style="margin-top:-70px; height:130px; background:green;"></div>
+</div>
