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Solution 1:- If you want to change the border of the Grid, you can use the Content Border under “Content Tab” on the left side of the Theme studio panel. Under that Content Border you can change the border color that you required. Please refer to the below screenshot.
Solution 2:- Otherwise if you need to remove the border inside of the Grid, you can use “GridLines” property in the Grid control. By using this property you can remove the border inside of the Grid on horizontal and vertical side. Please refer to the online demo sample
Please refer to the API link about GridLines:-
Solution 3:- If you are expecting to override the outside border of the Grid , you can follow this solution. For this, you have to remove the border-style css property of the class “.e-grid” or you can set the border-style according to your requirement. Please refer to the below screenshot
Please get back to us if you need further assistance.
Farveen sulthana T