Why does someone put 'human' at the end of their social media profile as a summary or description? i've seen this a lot online nowadays.

Well, this code would box the whole body of an html document. by using the relative value for position, you are telling it to position relative to its normal position, which the top left corner is at (0,0). by using left: 50px, you are telling the box to set the left margin  edge to 50px and by using top: 50px, you are telling it to set the top margin edge to 50px. by doing this shifting, the top left corner of the box, which is at (0,0) would be positioned at (50,50)

This % the percentage sighn to show percent

Try and find out. if you understand sql figure it out and stop asking random pepple.