chromium/third_party/blink/web_tests/fast/css/emptyStyleTag.html

<style></style>

This tests that we support empty style sheets.

<div id="result">Test failed.</div>

<script>
if (window.testRunner)
    testRunner.dumpAsText();

if (document.styleSheets[0]) {
    var result = document.getElementById("result");
    result.innerHTML = "Test succeeded!";
}
</script>