title: Is `position: fixed` on `<body>` problematic?
body: <p>On a SPA for mobile devices and desktop browsers I need to set <code>position: fixed</code> on <code>&lt;body&gt;</code> to avoid iOS' overflow/rubberband scrolling. </p>
  
  <p><code>position: fixed</code> and modifications on the <code>&lt;body&gt;</code> are always somewhat hacky and risky to cause problems. </p>
  
  <p>This is why I wanted to clarify:</p>
  
  <p><strong>Are there any known problems / caveats / things to watch out for (i.e. stacking context, z-indexing context, static/relative/absolute/fixed positioning on children) / ... when adding <code>position: fixed</code> to <code>&lt;body&gt;</code></strong></p>