Almost all sites using the SUP tag do not instruct the browser how to display it. But the default display is frankly lame - this tag breaks texts, the height of the line where SUP is present increases and as a result we are presented with randomly scattered lines, and not a paragraph. It is even difficult to quickly understand whether such an extra-space is a breakdown between lines, or between paragraphs.
Two variants of superscript: “mine” and standard.
The most interesting thing is that this behavior can be easily corrected , just add a global style like this: ')
It is very strange that practically no one fixes o_O, even those who do not forget to arrange Christmas trees with long dashes, even Wikipedia ! where these soups are full.