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<!DOCTYPE html>
<html>
<style>
#target::before {
content: 'before';
margin-left: 10em;
font-size: 20px;
}
</style>
<div id="target"></div>
</html>
<!DOCTYPE html>
<html>
<style>
#target::before {
content: 'before';
margin-left: 10em;
font-size: 20px;
}
</style>
<div id="target"></div>
</html>