Description

When styling class diagram elements using style or classDef statements, css properties containing a - character (e.g., font-family) cause a rendering failure.

Steps to reproduce

1. Try to set font-family using a style or classDef statement in a class diagram.
2. Render fails

Screenshots

Code Sample

https://develop.git.mermaid.live/edit#pako:eNo9kE1vgzAMhv9K5DNDEAJrcm2v22HaacrFI6aNRpIqBG0d4r8voK4n-3lff8kL9MEQKOhHnKaTxXNEp732O7Nj8Amtp6iUws_-YZxoYJnZkP2nAZ0db-rdOprYK32zt-DQb7VQwDlaAyrFmQpwFB1uCIv2jGlIF3KkQeXUYPzSoP2ae67oP0Jw_20xzOcLqAHHKdN8NZjofulDjeQNxWOYfQLV7iNALfCToalKKYXs5HMruGyyecuqaMqqaXl9qDiXQnRrAb_7zqrkQkp5qFvO266qa9kVQMamEF_ur9rC-ge-NWQV

Setup

• Mermaid version: 11.12.2
• Browser and Version: Chrome 143.0.7499.170

Suggested Solutions

Improve style property parsing.

Additional Context

No response