Objects over curved surface I'm using a template that has a curved mesh (I think), as a background. Like the following image:





My problem is that because of the curvature, objects that farther away are cut in half, and I don't want this to happen, shown in the next image:



View from below

I didn't do and do not know how to make that curved mesh, is there a a way that I could make the curvature less soft, or create a new mesh that won't cut the objects?

P.S: I'm a complete noob in blender so please don't get mad if it is supper easy to fix or another reason.
The simplest way to recreate the mesh:
(in Blender 2.8)

1) Add a cube (Add->Mesh->Cube)
Then select and remove all but two sides (Delete->Faces).  



2) Bevel the only edge that remained using the Bevel Tool.
Shortcut: Ctrl+B
Set the parameters as desired.  



3) Set smooth shading, so it's perfectly smooth.


You're done.
You can now position it as you need.

Tip:
If you're a beginner, switch to 2.8. (or 2.81)
It has waaay more friendly user interface and is much easier to work with.