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Test Info:
<!DOCTYPE html>
<html lang="en" class="reftest-wait">
<meta charset="utf-8">
<title>Changes to background-position should invalidate properly for fieldsets.</title>
<style>
body {
margin: 0;
}
#background {
width: 100px;
height: 100px;
background-image: url(image_rgrg-256x256.png);
background-repeat: no-repeat;
background-position: 0 0;
border: 0;
padding: 0;
margin: 0;
}
</style>
<fieldset id="background"><legend></legend></fieldset>
<script>
function doTest() {
document.querySelector("#background").style.backgroundPosition = "-140px 0";
document.documentElement.removeAttribute("class");
}
document.addEventListener("MozReftestInvalidate", doTest);
</script>