Decrease space between page title and text

A link to the site would help. =)

That is a local install, only you can view that. I installed the theme real quick to take a look, there is a 30px margin on the bottom of the page titles. You can override that by adding the following CSS in either a custom CSS plugin or via your child theme style.css. I wouldn’t recommend editing the parent theme style.css since those changes may be lost if the theme updates.

.single .entry-header, .page .entry-header {
    margin-bottom: 0px;
}