Testing the gate here. For some reason it was showing the content of the web page inside the gate.
Themify Content Here:
The default static guides consist of a centered vertical guideline and a centered horizontal guideline. The intersection of the two shows you the center of the slide.
You can add more static guidelines to help you arrange objects on your slides. You can also color-code the guides. Guides can help you arrange things consistently across an entire set of slides. See Use master-level guides to align objects across all slides for more information.