my website code thing made my web browser pages have a typing cursor when i misclick and i cant figure out how to fix it

the web page will show a currently typing cursor, the little blinking line on typing stuff, if i misclick lets say on an amazon product page it will just appear. its like the code has changed to make every screen/tab/window/page a word document and i dont know how it happened, how to fix it and what all it even is so help would be massively appreciated, thank you. sorry about the typing and commas thigny idk what is called in english as english is no my first langwige