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Test Info:

<!DOCTYPE html>
<html>
<head><style>
div.a {
column-count: 2;
overflow-y: hidden;
background: yellow;
}
div.b {
background: orange;
clear: both;
margin-top: 946982.46874999995cm;
}
div.c {
position: fixed;
background: red;
}
</style></head>
<body
><div class="a"><div
><div class="b"><li></li></div
><div class="c"></div
></div></div
></body>
</html>