SASS
button:focus
outline: none !important
a
&:focus, &:active
outline: none !important
button::-moz-focus-inner
outline: none !important
input
&[type="reset"]::-moz-focus-inner, &[type="button"]::-moz-focus-inner, &[type="submit"]::-moz-focus-inner
outline: none !important
select::-moz-focus-inner, input[type="file"] > input[type="button"]::-moz-focus-inner
outline: none !important
CSS
button:focus,
a:focus, a:active,
button::-moz-focus-inner,
input[type="reset"]::-moz-focus-inner,
input[type="button"]::-moz-focus-inner,
input[type="submit"]::-moz-focus-inner,
select::-moz-focus-inner,
input[type="file"] > input[type="button"]::-moz-focus-inner {
outline: none !important;
}