The page editor allows you to assign custom classes/styles to elements in the content area.

There are 3 custom button options for your site.  You can highlight text in your content area, select the link icon to assign a link and then choose the button class from the formats menu.  The three options are "smal-btnl", "medium-btn" and "large-btn"

A text or elements in the content editor can be assigned the class "one-half" and give that content a width of 50% inside of your page.