Gpstools track details - customize Title (size, font, ...)

Hi,

I would like to change Gpstools tracks details - customize Title (size, font, bold, ...)

1 / How to change title size?

I've played with F12 : #cj-wrapper h1, #cj-wrapper .h1 {font-size: 28px;}, but need help to implement it in template CSS

2/ Will it affect only GPSTools or all CJ components?

Thks, Gil