to edit hr length in html code example
Example 1: which is right or in html
<hr> <!-- it represents a horizontal line break, in HTML4.0 we use <hr>,
in XHTML1.0 we use <hr/>, in HTML5(which is the current version of
HTML) we can use both <hr> and <hr/>
-->
Example 2: hr tag html
<hr> <!-- A horizontal line -->