inspect
In general you could inspect element to learn ± about the structure.
outline elements
Also usefull to outline - divs/block elements
https://chrome.google.com/webstore/detail/pesticide-for-chrome/bblbgcheenepgnnajgfpiicnbbdmmooh
-or-
cards
About the idea of shadow cards - try her:
vertical-rhythm text
About text flow - i guees webflow use vertical-rhythm patterns (Very good spacing):
Rhythm is achieved when the elements of your design are organized into repeatable patterns.
https://builttoadapt.io/8-point-grid-vertical-rhythm-90d05ad95032