Thanks for the tips, I will look into this later. I don't have to much time for my school project, as for now it works.. I've got this code from an (old) example from school.
As you can see it works correct, but the code is not correct.
If I am correct, my css stylesheet css/styles.css should style everything in my app if I place all my css code in this file and place a link to this file in the index.html file. correct?
But it didn't. I need to place the css style code for the avatar inside the page where it needs to work.
When I remove the code and place it in my css/styles.css file it should work right? But it doesn't..
Only for the avatar stuff (the center of the headers). All other CSS in styles.css works.
When I've fixed this issue I'm going to clean all html files of style and fix my styles.css stylesheet. It's quite a mess.