I have tried and failed in every way. I created the custom.css file in the notebook's folder, but even if I copy the example from the Theming part of documentation, it does not change anything. What am I doing wrong?

I have got this flowchart:

mo.mermaid(
"""
flowchart TD
B[B]
B --> CC]
C --> D[D]
D --> E[E]
E --> F[F]
F --> G[G]
G --> H[H]

%% Define a class for rounded rectangles with transparent fill
classDef roundedRect fill:transparent, stroke:#333, stroke-width:3px, rx:10, ry:10;

%% Apply the class to all nodes
class A,B,C,D,E,F,G,H roundedRect;
"""
)

which is slightly larger than the output cell. When I use the .center() method, the chart gets smaller to fit in the cell. Is it a desired behavior, or a bug?

Is it possible to import stuff from one project to another on the marimo.io dashboard?

I have a collection of notebooks in the marimo.io/dashboard/... and I would like to either hide the code by default or exclude it. So I would like a ntb to open as marimo.io/p/@kejtos/slug?include-code=False (or ?show-code=False) when someone opens it at marimo.io/c/@kejtos/collection_name. I have tried various things in the settings, but I have not been able to figure it out. Thanks.