Core Code
Core Code Modern Dev Handbook

CSS rem Unit

The rem unit scales relative to the root font size.

Preview

Code

<style>
html{
font-size:16px;
}

p{
font-size:2rem;
}
</style>

<p>This text uses rem units</p>

More CSS Units Examples (8)

example CSS px Unit open example example CSS em Unit open example example CSS Percentage Unit open example example CSS vw Unit open example example CSS vh Unit open example example Font Scaling with rem open example example Responsive Width open example example Viewport Text Size open example