title: Is there any specification for the value of Element.scrollLeft in RTL elements?
body: <p>Different browsers render different values for <code>Element.scrollLeft</code> in RTL elements. (<a href="https://stackoverflow.com/questions/24485043/jquery-scrollleft-in-rtl-direction-different-value-in-firefox-chrome">More details in this question</a>).</p>
  
  <p>And <a href="https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollLeft" rel="nofollow noreferrer">according to the MDN</a>, if the direction of the element is rtl, the <code>scrollLeft</code> should be 0 when the scrollbar is at its rightmost position. (Which means that Chrome's implementation is faulty). </p>
  
  <p>But I couldn't find any specification that backs what the MDN mentions about this property in RTL mode.</p>
  
  <p>Can anyone help me find one ?</p>
  
  <p>Thanks in advance.</p>