1) when do we use line-height and height? (In menus (ul,li) do we use height or line-height?)
2) when do we use % and pixel?
3) when do we useandCode:position:relative? are they supportive for IE?Code:position:absolute
4) when do we use float and clear function?
5) Using use tables when div's are not aligned properly is right method?
These all problems I face in my current project, Please clarify me with this so that its very helpful to align my work..