I understand why it could be confusing. Here's what you need to know to clear it up. The controls for CSS Grid Builder and in RSDv3 (now called "SD3") are virtually the same. Therefore, if you watch a tutorial for CSS Grid Builder, you can do the same thing in SD3.


The short answer is yes, but you will need to convert the layout of your site to CSS Grid. Let me explain:

Foundation and Bootstraps are frameworks that work on a "rows and columns" layout. CSS Grid deals only with layout. Therefore, in SD3, you set up your layout with CSS Grid and then use all the framework functions from Foundation or Bootstrap.

You can keep both RSD2.5 and SD3 installed on your computer at the same time. Being a web developer, I have created many sites in 2.5 for clients. For now, I am using 2.5 to edit their sites. Once they have me convert their site to CSS Grid, I'll edit their sites in SD3.

HOW TO TRANSITION FROM RSDv2.5 TO SD3
Here is what I am doing...
1. Make a copy or your project file and play with it in SD3 to learn grid and to covert your site. (You won't have to recreate it.)
2. In the meantime, until you are satisfied with it in SD3, you can make the edits in 2.5 for your live site.
3. Once you have your site fully converted to grid, you can make that version live and edit in SD3 from then on.

You don't have to convert your layout to CSS Grid in SD3. That is a inaccurate statement.

You can still use the .row and .col found in the Layout classes. Works just like it always did.

I do understand the recommendation to convert to CSS Grid however we should be providing all the options available when importing or designing a new site.