mathml/relations/css-styling/mathbackground-002.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>mathbackground on mstyle</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#legacy-mathml-style-attributes">
<link rel="help" href="https://w3c.github.io/mathml-core/#text-mtext">
<link rel="help" href="https://w3c.github.io/mathml-core/#style-change-mstyle">
<link rel="mismatch" href="mathbackground-002-notref.html"/>
<meta name="assert" content="mathbackground on a mstyle has a visual effect.">
<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mstyle mathbackground="red">
    <mtext>□■□■□■□</mtext>
  </mstyle>
</math>