css/css-text/white-space/break-spaces-003.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Text Test: white-space: break-spaces</title>
<link rel="author" title="Javier Fernandez Garcia-Boente" href="mailto:jfernandez@igalia.com">
<link rel="help" title="3. White Space and Wrapping: the white-space property" href="https://drafts.csswg.org/css-text-3/#white-space-property">
<link rel="help" title="5.2. Breaking Rules for Letters: the word-break property" href="https://drafts.csswg.org/css-text-3/#word-break-property">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#valdef-white-space-break-spaces">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#valdef-word-break-break-word">
<meta name="flags" content="ahem">
<link rel="match" href="reference/white-space-break-spaces-005-ref.html">
<meta name="assert" content="break-word + break-spaces do not allow a break
between the last character of a word and the first space of a sequence of preserved spaces
if there are other wrapping opportunities earlier in the line.">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
   font: 25px/1 Ahem;
}
.fail {
  position: absolute;
  color: red;
  z-index: -1;
}
span { color: green; }
.test {
  color: green;
  width: 4ch;

  white-space: break-spaces;
  word-break: break-word;
}
</style>
<body>
  <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
  <div class="fail">XX<span>XX</span><br>X<span>X</span>X<span>X<br>XXXX<br>XXXX</span></div>
  <div class="test">XX X X</div>
</body>