Wie füge ich Textsuffixe zur visuellen Unterscheidung zu Zahleneingaben hinzu?

<code class="css">/* Prepare wrapper element */
div {
  display: inline-block;
  position: relative;
}

/* Position the unit to the right */
div::after {
  position: absolute;
  top: 2px;
  right: .5em;
  transition: all .05s ease-in-out;
}

/* Adjust unit position on hover and focus */
div:hover::after,
div:focus-within::after {
  right: 1.5em;
}

/* Override for Firefox (arrows always shown) */
@supports (-moz-appearance:none) {
  div::after {
    right: 1.5em;
  }
}

/* Specify abbreviation for each unit class */
.ms::after {
  content: 'ms';
}
.db::after {
  content: 'db';
}
.percent::after {
  content: '%';
}</code>

<code class="html"><div class="ms">
  <input type="number" id="milliseconds">
</div>
<hr>
<div class="db">
  <input type="number" id="decibel">
</div>
<hr>
<div class="percent">
  <input type="number" id="percentages">
</div></code>