Relative File Paths
//the file path points to a file in the images folder located at the root of the current web
<img src="/images/picture.jpg" alt="Mountain">
//the file path points to a file in the images folder located in the current folder
<img src="images/picture.jpg" alt="Mountain">
//the file path points to a file in the images folder located in the folder one level above the current folder
<img src="../images/picture.jpg" alt="Mountain">