Problem with cardinality/multiplicity visibility

[Eekain]

In classDiagrams, the cardinality signs (*, 1..*, 1) are far too small to view. Is there a way to increase their size in relation to normal letter size throughout the diagrams?

    classDiagram
        Animal "1" <|-- "1..*"Duck
        Animal <|-- Fish
        Animal "*" <|-- "*" Zebra
        Animal : +int age
        Animal : +String gender
        Animal: +isMammal()
        Animal: +mate()
        class Duck{
            +String beakColor
            +swim()
            +quack()
        }
        class Fish{
            -int sizeInFeet
            -canEat()
        }
        class Zebra{
            +bool is_wild
            +run()
        }

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