how to set relative path code example

Example 1: absolute path and relative path

/* Absolute Path */
https://www.w3schools.com/images/picture.jpg

/* Relative Path */
/images/picture.jpg

Example 2: html relative path

<!--The ./ means the contact.html file is in the same file 
as the file that is linked to it-->
<a href="./contact.html">Contact</a>