mstyleAdep1.mml

<?xml version="1.0" encoding="UTF-8"?>

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <mstyle fontsize="150%" fontweight="bold" fontstyle="italic" fontfamily="helvetica" color="teal">
    <mn>2</mn> 
    <mo>+</mo> 
    <mi>x</mi> 
  </mstyle> </math>