I know how to add CSS on my main option buttons but how can I add Css on the non main option buttons ?

For main option I use that :

.button, .mainoption{CSS HERE}


Main option? What really is that?

Let's take the logout buttons... When you press log out, another page will appear asking you if you really want to log out.There are 2 buttons.The on says "yes" and the other says "no".

The "yes" button is the main option. Big grin

All buttons have a global type selector.
input, button

That makes and the input fields like the buttons :(

Use them separate, then.