1 files changed, 20 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/CSS2/positioning/relpos-percentage-left-in-scrollable.html b/testing/web-platform/tests/css/CSS2/positioning/relpos-percentage-left-in-scrollable.html
new file mode 100644
index 0000000000..54856e7290
--- /dev/null
+++ b/testing/web-platform/tests/css/CSS2/positioning/relpos-percentage-left-in-scrollable.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/CSS22/visuren.html#propdef-left">
+<link rel="help" href="https://www.w3.org/TR/CSS22/visuren.html#relative-positioning">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=908083">
+<p>There should be no red, and no scrollbar.</p>
+<div id="container" style="overflow:auto; width:500px; background:red;">
+  <div style="padding-right:90%; background:yellow;">
+    <div style="position:relative; left:900%; width:50px; height:50px; background:cyan;">
+    </div>
+  </div>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+  container.scrollLeft = 123456;
+  test(()=> {
+      assert_equals(container.scrollLeft, 0);
+  }, "Left percentage resolved correctly for overflow contribution");
+</script>