Mermaid gives us a way to style nodes through the use of css, but rather than
using normal css selectors we need to use
. This also applies
to subgraphs, and we can use the name of the subgraph in place of the nodeid.
graph TD; a --> A A --> B B --> C style A fill:#f9f,stroke:#333,stroke-width:4px style B fill:#f9f,stroke:#333,stroke-width:4px subgraph one a end style one fill:#BADA55
produces the following graph