font-size

<p layout="font-size:2">...</p>

The font-size utility will set the font-size on an element.

You can specify the value using any valid CSS unit. If no unit is provided, a default harmonic value will be applied.

If you set it on an element, all its children will have this font-size, if you want to reset the font-size of an element inside you just have to set font-size:0, because it will use 1rem.