first-line-in-columnset-1-ref.html

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<!DOCTYPE html>

<style>

  div { color: red; border: 10px solid green; column-count: 2 }

  div::first-line { color: green; border: 10px solid red; }

</style>

<div>

  <span style="border: 10px solid green">Some text</span>

</div>