Hi I have recently installed Soledad as my blog theme and would like to have the same arrangement with the texts showing on the main page. In this demo the first post is shortened but with a greater volume than the other posts on the page. How can i get the same look? http://soledad.pencidesign.com/soledad-simple/

I can only manage to get the same look on the following posts but not to shorten the first post displaying.

Thank you!