The best place to start is wherever you learnt HTML and CSS. Then follow it up by reading the specifications CSS Pseudo Class. Learn CSS Tutorials.A. ID Selector in CSS. W3C defines ID as Unique Identifier to an Element.But suppose we have to use this class selector only to the element of type div. css - Difference between div id and div class - Stack Overflow.The
? I see different developers doing this in both ways, and since Im self taught, Ive never really figured it out.In CSS, ids look like elementID and class elements look like .someClass.
. Then using CSS you can give each of the three (3) classes different characteristics/styles.