mermaid : text too small to be read

Hi,
In a presentation, in presentation mode, the text in the mermaid diagram is too small to be read:
```mermaid

flowchart TB
subgraph pile - taille 6 - 3 valeurs
direction LR
c0["ind 0 | [ ]"]
c1["ind 1 | [E]"]
c2["ind 2 | [D]"]
c3["ind 3 | [C]"]
c4["ind 4 | [ ]"]
c5["ind 5 | [ ]"]
end

debut(("Sortie")):::mark
fin(("Entrée")):::mark

debut --> c1
fin --> c4

classDef mark fill:#fdd,stroke:#000,stroke-width:1px;

```
In creation mode, there is no issue
Thx