How to apply same styling to multiple classes

[newcoder1010]

Hi,

 

I have this

#block-block-55 h2 { text-align:center;}
#block-block-56  h2 { text-align:center;}
#block-block-57  h2 { text-align:center;}

How can I write one css for all so i dont have to write separately?

 

Thanks.

[Ingolme]

You can use multiple selectors by separating them with a comma:

#block-block-55 h2,
#block-block-56 h2,
#block-block-57 h2 { 
  text-align:center;
}