Did you happen to notice the new border that Google added to select options when active in Chrome? Wondering how you can remove it since Firefox doesn't display this border?
Google Chrome Version 83.0.4103.61 (64-bit)
<html>
<head>
<style>
select option:focus {
border:0px;
outline:0px;
-webkit-appearance: none;
outline: none !important;
}
</style>
</head>
<body>
<select>
<option>Test11</option>
<option>Test22</option>
</select>
</body>
</html>