Is there a way to mark my thread as "Solved"?

I had started a thread about shadows and transparency in Blender 2.80 and eevee, but I have solved the problem. It seems it would be good to mark it as solved so if anyone else has a similar issue it might help that person. But I don’t see an option for this.

Yes, you can pick a reply (or make one yourself) and there’s a little box with a check mark in the lower right options that will mark it as the solution for your original post. You might have to click the “…” to see it.