This theme uses WordPress feature called „Post Formats“. Using „Post Formats“ posts can be styled differently and independently of each other. This post, for example, is a „standard post“ format that is marked as „sticky post“.
If featured image is uploaded it will be shown on the top of the content like in this example.
This post uses format „Quote“ and it is styled differently. When you enter the content you’d like to show as a quote you just need to mark “Quote” inside the “Format” box on the right side under the “Publish” menu.