Title formatting of posts

I have inserted posts into a page as a shortcode as follows:

[display-posts include_title=”true” include_author=”false” include_content=”true” include_date=”true” date_format=”F j, Y” include_excerpt=”false” include_link=”false” category_display=”false” no_posts_message=”There is no current news. Please check back again soon.” title=”Current News”]

It’s all working fine, except that the post title is too small.

How can I make the title display at a larger size, and where do I make the change to the styling?

The larger font size should happen in every occurrence of an embedded post from this ‘News’ category. Thanks!