em vs rem

by ordette August 31, 2016

HTML

<div><h1>lorem ipsum dolor sit amet</h1>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quibusdam voluptas dolorum ratione laborum explicabo nostrum, animi accusamus. A voluptas beatae provident recusandae, consectetur, aliquid officiis doloribus. Aliquid excepturi fuga officiis.</div>
<div><h1>lorem ipsum dolor sit amet</h1>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quisquam aperiam ab aliquid quaerat ipsa adipisci amet, odit quidem. Neque deleniti maiores quidem blanditiis placeat quis delectus repellat totam iure consectetur?
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Explicabo tempora dicta voluptatum magnam, odio voluptate nostrum ipsam, repellat animi, eligendi voluptas incidunt deserunt voluptatem qui omnis eos vero dolor modi.</p>
</div>

CSS

html {
  font-size: 100%;
}
div {
  font-size: 2rem;
}

h1 {
  font-size: 1.5em;
}

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em vs rem

HTML

CSS

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Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console