Season´s Greetings
Have a Christmas full of [...]

Compare the pattern.

#gallery-1 {
margin: auto;
}
#gallery-1 .gallery-item [...]

#gallery-2 {
margin: auto;
}
#gallery-2 .gallery-item {
float: left;
margin-top: [...]

The one who will kick arses [...]

Once Again @ GDL

#gallery-3 {
margin: auto;
}
#gallery-3 [...]

Done for Haschaschin one of the [...]