I18N Gallery

[mvlcek]

Now I want to change the background-images for h2, using :nth-child-property, but I have no success

The n'th child must be applied to the slide, not the h2 (because there is only one h2:

Code:

#content .gallery .gallery-slide:nth-child(1) h2 { ... }
#content .gallery .gallery-slide:nth-child(2) h2 { ... }

However, this is CSS3 and will not work in all browsers.
You can also do it using CSS2:

Code:

#content .gallery .gallery-slide h2 { ... }
#content .gallery .gallery-slide + .gallery-slide h2 { ... }
#content .gallery .gallery-slide + .gallery-slide + .gallery-slide h2 { ... }