Change the mouse pointer on ngclick

Can be done via css, just add:

.yourClass { cursor: pointer; }

To your stylesheet

All you have to do is use the cursor property

<div data-ng-click="myFun()" class="pointer"></div>

.pointer {
    cursor: pointer;
}

Is there a way to change it through css?

Yes, see cursor.

If you just wanted to target elements with the ng-click attribute, for example:

[ng-click],
[data-ng-click],
[x-ng-click] {
    cursor: pointer;
}