I am glad to hear you managed to resolve the situation.
The Grid itself and the buttons do not set min-width automatically. I just tested and from my end specifying only width: 20px of the k-grid-edit and k-grid-delete apllies the style and shrinks the buttons. You could check if there is a style setting this. However, if you reached the decired result you may leave it as it is now.
If there is anythign lease, I could help with, pelase contact me back.
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