I have the same issue, no way to fix it.
hi Jingrui,
In style properties set margin,padding,height,width according to your requirement.
thank you
Don't use inline styling (bad practice), instead make custom css classes that overrule your existing card class and implement those on the 'class' property of your card building block.
Just ensure that :
Let’s take an other view.
The action card has been changed, but this is basic HTML and basic styling. So don’t ask how to change it back, but deal with the new situation. In that case you can change the styling like Shekhar explained in his answer.
My advise: do not only know how to use, but also how it works under the hood.