1373559.html - mozsearch

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<!doctype html>

<title>CSS test for bug 1373559: Deleted @import rules no longer apply to the document.</title>

<style></style>

Shouldn't be red.

<script>

let sheet = document.styleSheets[0];

sheet.insertRule("@import url(data:text/css,body{color:red})", 0);

document.documentElement.offsetTop;

sheet.deleteRule(0);

</script>