I'm just learning to use Responsive Site Designer 2. When I open the application a theme automatically loads, and when I click on a new project this theme loads. I want a new project to come up with a blank screen. What am I doing wrong?

Select a blank theme that you want to use from the Blank category and then check the box "set as default".

Thanks so much. So easy if you know how.

I am going through building the sample website tutorial you provide in your knowledge base for Responsive Site Designer. All well, until I started adding background (a cat) and tweaking the design. When I move the slider to the left of the first Bootstrap 3 breakpoints to smaller screen size the background pictures and design modifications of the call out column disappear. Should I be using Bootstrap 4 or designing in another mode?

PS. If I manually add yellow breakpoints, they do not affect the images.

start your designing layout whatever just to the left of the lowest breakpoint,, then move upwards and change layout styling whenever it appears to need it,, at that point add a breakpoint,, then continue upwards.