i did't understand what he meant by the 2 dots? thanks :)

The two dots are a part of a relative path. In the example the css file Nick is working on is contained in the css folder. If he would enter the path to the image being used without the two dots the program would start in the css file's directory then attempt to find the image file from there. So with out the two dots it would look for 'css/img/phone.png'.

When you are adding two dots you are telling the program to move up one directory and then find the img folder.

Hopefully that makes sense :)

.. is just a code for going backwards in a relative path. Imagine your at the C: drive and go into User folder and, so it be C:\User, inside user you create a folder called CSS with a mystyle.css in it. So you have C:\User\CSS\mystyle.css.

Well if you want reference let say an image folder in C:\User\image in your mystyle.css and you put src('image\myimage.jpg') the full path is "C:\User\CSS\image\myimage.jpg", which is not correct. So you need to go back one, thats what .. does, so src('..\image\myimage.jpg') is translated to C:\User\CSS\Image\myimage.jpg, this works as much as you need it to go back. Need to go back to C drive? src(.....\image\myimage.jpg) would be C:\image\myimage.jpg, we went back to C drive then into another folder.

Hope that helps!