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+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Mouse focus does not show a focus ring by default</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not selector(:focus-visible) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+</style>
+
+<p>This test checks that by default, using the mouse to focus a generic element does not show a focus ring (because it does not trigger <code>:focus-visible</code> matching).</p>
+<ol id="instructions">
+  <li>Click on the element below that says "Click me."</li>
+  <li>If the element does not have a focus ring, then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+<div id="target" tabindex="0">Click me.</div>
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func(function() {
+      assert_equals(getComputedStyle(target).outlineStyle, "none", `outline-style for ${target.tagName}#${target.id} should be none`);
+      t.done();
+    }));
+    test_driver.click(target).then(() => done());
+  }, "Mouse focus does not show a focus ring by default");
+</script>