visible Default value. Content is not clipped, it may be rendered
outside the content box.
If overflow is auto or scroll it will add scroll-bar to button.
That’s why Twitter bootstrap used overflow:visible; so that button will be rendered outside the content box.
It belongs to Normalize.css not twitter bootstrap. It is used to reset the value of overflow to visible as it is set to hidden in IE 8/9/10/11 by default.
//
// Address `overflow` set to `hidden` in IE 8/9/10/11.
//
button {
overflow: visible;
}
2
Answers
Check the reference
If overflow is
auto
orscroll
it will add scroll-bar to button.That’s why Twitter bootstrap used
overflow:visible;
so that button will be rendered outside the content box.It belongs to Normalize.css not twitter bootstrap. It is used to reset the value of
overflow
tovisible
as it is set tohidden
in IE 8/9/10/11 by default.