1 files changed, 64 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-contain/contain-paint-clip-011.html b/testing/web-platform/tests/css/css-contain/contain-paint-clip-011.html
new file mode 100644
index 0000000000..d9b9052f4b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-contain/contain-paint-clip-011.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Containment Test: 'contain: paint' and clipping descendants at padding edge</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-contain-1/#containment-paint">
+  <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+
+  <meta content="This test checks that the paint of the descendant (a red square image) and its geometry is clipped to the padding edge of the element's principal box." name="assert">
+
+  <!--
+
+  contain-paint-clip-011: content overflows horizontally, principal box has no padding
+
+  contain-paint-clip-012: content overflows vertically, principal box has no padding
+
+  contain-paint-clip-013: content overflows horizontally, principal box has horizontal padding
+
+  contain-paint-clip-014: content overflows vertically, principal box has vertical padding
+
+  contain-paint-clip-015: content overflow horizontally, principal box has horizontal padding and corner clipping is involved
+
+  contain-paint-clip-016: content overflow vertically, principal box has vertical padding and corner clipping is involved
+
+  contain-paint-clip-017: principal box has horizontal and vertical padding, generated ::before content is inside top-right corner
+
+  contain-paint-clip-018: principal box has horizontal and vertical padding, generated ::after content is inside top-left corner
+
+  -->
+
+
+  <style>
+  div
+    {
+      width: 100px;
+    }
+
+  div#red-overlapped-test
+    {
+      background-color: red;
+      contain: paint;
+    }
+
+  img
+    {
+      vertical-align: bottom;
+    }
+
+  div#green-overlapping-reference
+    {
+      background-color: green;
+      bottom: 100px;
+      height: 100px;
+      position: relative;
+    }
+  </style>
+
+  <p>Test passes if there is a filled green square and <strong>no red</strong>.
+
+  <div id="red-overlapped-test"><img src="support/swatch-red.png" width="200" height="100" alt="Image download support must be enabled"></div>
+
+  <div id="green-overlapping-reference"></div>