why should i use a css id and not style it (inline).w3schools css book says that we shouldn't unse the same id multiple times on multiple elements why ?why shouldn't we use inline style id one id can only be used for one tag ?
I see that in many php scripts, in the beginning of the script there is a "sessionstart" command. Forgive me, but i do not know a lot about session control. That is why i am asking.