nono youre 100% fine! but yeah! each element on a neospring profile has a different div/class (im not sure what the correct term for it is?) tag for each part, but you can look around in inspect element, or ask someone outright LOL someone also made this rentry which is useful imo https://rentry.co/neospringcss

for example, if you want to add a border around the main profile card area (which has your bio and sidebar in it), your code would likely look similar to this: https://pastebin.com/iLBCwhqc ! feel free to play around with it depending on what border youre using