revision:
When present, it specifies that the list order should be descending (9,8,7...), instead of ascending (1, 2, 3...).
The reversed attribute can be used on the following element:<ol>.
<ol reversed></ol >
This attribute does not reverse the order of the list items. This attribute works for all numbering systems: numeric, alphabetic, and roman numerals.
<ol style="margin-left:3vw;" reversed>
<li>Coffee</li>
<li>Tea</li>
<li>Milk</li>
</ol>
List of all computer subjects are
<ol style="margin-left:3vw;" reversed>
<li>Data structures</li>
<li>Operating systems</li>
<li>python programming</li>
<li>DBMS</li>
<li>Computer network</li>
</ol>