Margin-Extension

improvements calculate while it's store sure the code. updated can margin custom i made name are so have any know enter input. my chrome 10,15,20,25,30,35,40% changed me margin, it's or percentage a has - used update or 1.2 in and to as the user try message value. ints 1.1 error added first please are added characters learning checking,make error i in bugs you only - package non let it update int if any will improve extension values pre-defined used.