change post title font on homepage

Hello, this is somewhat embarrassing coming from a design company. This is my first ever time with WordPress but i am having problems with css customisation.

Basically I would like to increase the post title font size and colour to be the same as the post entry but cannot seem to find it anywhere in the stylesheet. The blog is http://blog.halfcentric.com.

I would greatly appreciate if any one could help. Spent an awful amount of time trying to figure it out.

Thanks