Bootstrap button - remove outline on Chrome OS X

Question

I am looking to achieve this: http://getbootstrap.com/javascript/#popovers-examples - scroll to the \"live Demo\" and hit the red popover button, in Chrome on OS X.... It\'s per

Answer 1

In bootstrap 4 the outline is no longer used, but the box-shadow. If it is your case, just do the following:

.btn:focus {
    box-shadow: none;
}