How to remove cistern lid from push button toilet

Hi, the buttons are usually connected by one of either two ways:- a) Push one button down, then put you finger under the other button and pop it out, then pop the other button out. When both buttons have been removed, there is usually a plastic pozi head screw to undo. Remove the screw and it will all come apart. b) Leave buttons in place and unscrew circular rim around buttons (anti-clockwise) wearing rubber gloves helps with the grip. Then it should all come apart. Putting either way back together can be a bit fiddly. Just need a bit of patience.