Css shadow on button when clicked (how do you remove it) - mobile only

I Need Help
1

When using coloured buttons and hover and on click effect is white there is a noticeable shadow within the button when activated. Anybody know how to remove it?

2

You could change the button style to Flat so that it doesn’t show a shadow. Alternatively, set a custom class on your button in mobile view and change the settings for hover and active states.

3

.btn-check:focus+.btn, .btn:focus {
outline: 0;
box-shadow: 0 0 0 0 rgb(13 110 253 / 25%);
}