Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
<!DOCTYPE html>
<html>
<!-- Test: if select is required and has at least one option selected but the
selection didn't changed, :-moz-ui-valid should not apply. -->
<link rel='stylesheet' type='text/css' href='style.css'>
<body>
<select class='notvalid' required multiple>
<option selected></option>
<option selected>foo</option>
</select>
</body>
</html>