Working With Grids - Building A Simple Website

I just wanted to add this cause I thought others might have the same problem I had and hopefully maybe won't have to waste all the time I did on it.

In the working with grids video in the build a simple website we're asked to create a div with a class of container and link it to the grid.css stylesheet.

I did everything exactly as asked but every time I refreshed my page, The page wouldn't center and didn't have margins around the content. I spent a very long time rewatching the beginning of the video and redoing my code and checking for typos and it still continued to come out wrong :S

Finally, I realized that a game I had been playing the day before had changed the screen resolution on my computer. I went back and reset my laptops screen resolution to normal and voila! margins :)

I just thought I would share in case anyone else had the same problem. It took me over an hour to figure out what was causing the problem.