A Pen by Mario Fink.

index.html

<span class="badge primary">1</span>
<span class="badge secondary">2</span>
<span class="badge">3</span>
<span class="badge primary">some longer text</span>

Round(ed)-badges.markdown

Round(ed) badges

A Pen by Mario Fink on CodePen.

License.

style.css

body {
  font-family: sans-serif;
  margin: 2em;
}
.badge {
  border: 0.2em solid teal;
  border-radius: 2em;
  display: inline-block;
  padding: 0.5em;
  min-width: 1em;
  text-align: center;
}
.badge.primary {
  color: #fff;
  background: teal;
}
.badge.secondary {
  color: #333;
  background: transparent;
}