On fire() function, add display:flex

[paulhalfpenny]

I'm using display:flex to position my modal centrally on the page, but this is overriden by this function:

function fire() {
// You can use ouibounce without passing an element
// #30
if (el) el.style.display = 'block';
disable();
}

If you can change this line to:

if (el) el.style.display = 'block | flex';

it works fine. I don't use Github typically, so no PR, but thought I would highlight it so you could add it in if you have time (or a better way of implementing this change!).

[Kalabasa]

I think a better way is to use visibility so clients can use any display style they want.