bootstrap 中这段代码 使bundles 失败

_:-ms-fullscreen,
:root input[type="date"],
_:-ms-fullscreen,
:root input[type="time"],
_:-ms-fullscreen,
:root input[type="datetime-local"],
_:-ms-fullscreen,
:root input[type="month"] {
  line-height: 1.42857143;
}
_:-ms-fullscreen.input-sm,
:root input[type="date"].input-sm,
_:-ms-fullscreen.input-sm,
:root input[type="time"].input-sm,
_:-ms-fullscreen.input-sm,
:root input[type="datetime-local"].input-sm,
_:-ms-fullscreen.input-sm,
:root input[type="month"].input-sm {
  line-height: 1.5;
}
_:-ms-fullscreen.input-lg,
:root input[type="date"].input-lg,
_:-ms-fullscreen.input-lg,
:root input[type="time"].input-lg,
_:-ms-fullscreen.input-lg,
:root input[type="datetime-local"].input-lg,
_:-ms-fullscreen.input-lg,
:root input[type="month"].input-lg {
  line-height: 1.33;
}