I am using a plugin which is setting css styles to input fields like so:

setupStyle = function () {
if (debug) console.log('setupStyle');
MP.style('font-size', '.9em');
MP.style('width', '100%'); // no calc support
MP.style('display', 'inline-block');
MP.style('padding', '16px 0');
}

Now I need to change the top-padding of these input fields on focus - how can I achieve this?