Add fluid boxes

- [Narrator] When you create a new responsive project…as we did in the previous movie,…certain things happen by default.…So if you were following along you may have noticed…a single slide appears in our new project,…it's a title slide with a placeholder for adding our title.…But some other things are happening…that you may not be aware of.…For example, just click in the background,…but near the border of this slide.…What you're going to see now…is a blue highlighting around the outside,…that indicates that we're working on a slide…containing what's known as a fluid box.…

The fluid box is…key to a responsive project.…Fluid boxes automatically, as the name implies,…adjust according to the output.…So if people are going to be viewing our finished product…on a tablet or smartphone,…the size of the slide and the fluid box…will automatically adjust as will the contents…inside a fluid box.…So in this movie we're going to…add some fluid boxes to multiple slides.…We already have one that fills the entire slide here…for our title slide.…