No you’re not. you’re trying to achieve the texts at the same position but being masked by the overflow of their sections? That’s not easy. Especially, you’ve tried with position:fixed and then you’re losing any ability to mask them, and the z-index are no help? That’s normal. Fixed position makes an element go out of the html flow of elements so they don’t respect the rules you’d like them to.
inspect the code of your Mono example, find the container of the titles and you’ll see they use the CSS CLIP property. like this:
clip: rect(0,auto,auto,0);
Read about CSS Clip and try to figure out if ou can use it on your own. Sorry, I’m on the go and can’t really provide mor help than this at the moment. Please report tomorrow?