A Single leading white-space constitutes a soft breaking opportunity, honoring the 'white-space: pre-wrap' property, that must prevent the word to be broken.">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  position: relative;
  font-size: 20px;
  font-family: Ahem;
  line-height: 1em;
}
.fail {
  position: absolute;
  color: red;
  z-index: -1;
}
span { color: green; }
.test {
  color: green;
  width: 5ch;

  white-space: pre-wrap;
  overflow-wrap: break-word;
}
</style>
<