Zindex & Header issues

Hey all! I’ve included my read only link and I am currently looking at Home Page 5. My logo in the header looks correct in the designer but when I go to live preview its extremely small.

Also, I’m trying to get the illustration of the brain and lightning bolts to move to the front of the next section. You can see on the page the element sits behind the pink section:


Here is my site Read-Only:


(how to share your site Read-Only link)