mermaid : text too small to be read

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;