Re-using CSS classes while changing content

Question

I would like to reuse the following CSS for multiple content labels (top-right corner). For example, Foo, Bar, Baz, etc.

Is it possible to re-use as much of the existing style without duplicating the full code? In the example below foo and bar are identical with the exception of content string in .foo:after and .bar:after.

.foo {
    position: relative;
    border: 1px solid #ccc;
    padding: 1em 1em 0.5em 1em;
    border-radius: 4px 4px 4px 4px;
}

.foo:after {
    content: "Foo";
    position: absolute;
    top: 0px;
    right: 0px;
    padding: 3px 7px;
    font-size: 12px;
    font-weight: bold;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    color: #9da0a4;
    border-radius: 0px 4px 0px 4px;
    border-width: 0px 0px 1px 1px;
}

.bar {
    position: relative;
    border: 1px solid #ccc;
    padding: 1em 1em 0.5em 1em;
    border-radius: 4px 4px 4px 4px;
}

.bar:after {
    content: "Bar";
    position: absolute;
    top: 0px;
    right: 0px;
    padding: 3px 7px;
    font-size: 12px;
    font-weight: bold;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    color: #9da0a4;
    border-radius: 0px 4px 0px 4px;
    border-width: 0px 0px 1px 1px;
}

<div class="foo">
  Hello
</div>

<p/>

<div class="bar">
  Mama!
</div>

Answer 1

Best way! use attr(data-content) to reduce CSS classes

.x {
  position: relative;
  border: 1px solid #ccc;
  padding: 1em 1em 0.5em 1em;
  border-radius: 4px 4px 4px 4px;
}

.x:after {
  position: absolute;
  top: 0px;
  right: 0px;
  padding: 3px 7px;
  font-size: 12px;
  font-weight: bold;
  background-color: #f5f5f5;
  border: 1px solid #ccc;
  color: #9da0a4;
  border-radius: 0px 4px 0px 4px;
  border-width: 0px 0px 1px 1px;
}

.x:after {
  content: attr(data-content);
}

<div class="x" data-content="foo">
  Hello
</div>
<p/>

<div class="x" data-content="bar">
  World!
</div>
<p/>

<div class="x" data-content="seomthing else">
  Something!
</div>