[tzot]

It's very useful when having stuff like that:

  <style type="text/css">
  .code-line::before {content: '>>> ';}
  </style>
  <div class="code-line">print 12</div>
  <div class="code-line">a = [i**2 for i in range(10)]</div>

Then the reader can copy the actual code without the interpreter's prompt.