number-similar-to-text-unthemed-vertical-lr.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html style="writing-mode:vertical-lr;">

  <body>

    <input type="number" style="-moz-appearance:none; height:200px;" value="123">

    <!-- div to cover spin box area -->

    <div style="position:absolute; background-color:black; width:100px; height:200px; top:100px; left:0px;">

  </body>

</html>