<!DOCTYPE html>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  font-size: 10px;
  font-family: Ahem;
  width: 5.1ch;
  border: 1px solid blue;
}
</style>
<body>
  <div>12 4-<br>xx</div>
  <div>12<br>45xx</div>
  <div>12<br>456xx</div>
  <div>1234-<br>xx</div>
  <div>12345-<br>xx</div>
  <div>123456-<br>xx</div>

  <div style="width: 10ch">renfor-<br>cer99999</div>
  <div>00-<br>1222</div>
</body>
