@import
("at-import") With Media Type in Lower Case CSS FilterIf the background color of this paragraph is green (a darker green than this page's background) then the hack was applied.
Two style elements are used here because of the cascading order and because
@import
rules must come before all other rules in a stylesheet.
<style type="text/css">
p.test {
background-color: #f66;
}
</style>
<style type="text/css">
@import url(filters_test.css) all;
</style>