Friends, some times we will face different types of Cascaded Style Sheet (C.S.S) issues. Especially when we are dealing width in 100% ratio. In this case we can not expect the exact margin, padding or edges. This may happen when we are working for a large website with complex classes and heavy coding. In this time also we can overcome this width 100% problem. The below shown code is the simple example: Here calc funtion is helping us like a calculator which will add or subtract two units. Don't worry about cross browser compatibility. It can support all latest browsers, Internet Explorer 9+, Chrome, Mozilla any latest version. It can supports iOs also. Now we will see even more examples: Predicting with in the above like percentages is quite tough task, surely you agree with me right? Okay, here we have a simple solution using C S S calc function. Using width calc property is very simple and fast.