title: Is there anything wrong with html {font-size: 1px;} for working with REM units?
body: <p><code>html {font-size: 62.5%;}</code> seems like the standard approach to set the base font-size to 10px.</p>
  
  <p>E.g.,</p>
  
  <pre><code>html {font-size: 62.5%;}  /* 10px */
  body {font-size: 1.5rem;} /* 15px */
  </code></pre>
  
  <p>But this creates a dependency on the browser's font-size 16px. This seems unreliable in the long run... why not just...</p>
  
  <pre><code>html {font-size: 1px;}  /* 1px */
  body {font-size: 15rem;} /* 15px */
  </code></pre>
  
  <p>Is there a technical problem with this? It seems cleaner and much more reliable. Why don't I see people do this?</p>