So hopefully you got a chance to practice a lot of the things that you learned in this course. So I'll save, refresh, re-size the window, and try it out once again. This is just a clean-up function, it's going to work either way but, it's safer to do things properly. Which will be re-size, window, and false, because of the way the event bubbles, and do the same thing to get rid of the event that the text for scroll. So, I'll add a 'window, removeEventListener' here and pass it along the event that I want to remove. One more thing that I want to clean up is when I remove the 'overlay' I want to make sure that the window is no longer listening for the events that I have just created. So now, I'm going to make my window smaller again and I'll refresh click on this and as I re-size the window, the image will be centred. So let me go back here and just execute the center image function and pass it along to large image. And the overlay looks really good but the image is not centered. And I'll pull up one of these images, resize my window.

I'm going to make my window smaller again. (SOUND) And we also need to adjust the position of the top and left of the overlay. (SOUND) Of course, it's going to be inner height. (SOUND) We're going to do a similar thing with the height. So, my overlay style, we're going to change the style attributes width and we're going to make that to the window inner width plus the pixel measurement. Once again, we're going to make sure that the overlay exists. So this time, the event that I want to look for is called resize and, of course, like before, I want to execute a function and pass it along false to make sure that it bubbles properly. I'm going to go enter my code and, right over here, I'm going to add a listener for another window event. But if I resize my window now, you can see that it doesn't look good because the overlay doesn't stretch to the whole width of the window. If you resize this window for any reason and then I'm going to click on one of these, it looks great. But there's a slight problem that we need to take care of. This project is working and looking great.

Css off center on resize window