admin/view/stylesheet/sass/bootstrap/_responsive-utilities.scss

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//
// Responsive: Utility classes
// --------------------------------------------------


// IE10 in Windows (Phone) 8
//
// Support for responsive views via media queries is kind of borked in IE10, for
// Surface/desktop in split view and for Windows Phone 8. This particular fix
// must be accompanied by a snippet of JavaScript to sniff the user agent and
// apply some conditional CSS to *only* the Surface/desktop Windows 8. Look at
// our Getting Started page for more information on this bug.
//
// For more information, see the following:
//
// Issue: https://github.com/twbs/bootstrap/issues/10497
// Docs: http://getbootstrap.com/getting-started/#support-ie10-width
// Source: http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
// Source: http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/

@at-root {
  @-ms-viewport {
    width: device-width;
  }
}


// Visibility utilities
// Note: Deprecated .visible-xs, .visible-sm, .visible-md, and .visible-lg as of v3.2.0

@include responsive-invisibility('.visible-xs');
@include responsive-invisibility('.visible-sm');
@include responsive-invisibility('.visible-md');
@include responsive-invisibility('.visible-lg');

.visible-xs-block,
.visible-xs-inline,
.visible-xs-inline-block,
.visible-sm-block,
.visible-sm-inline,
.visible-sm-inline-block,
.visible-md-block,
.visible-md-inline,
.visible-md-inline-block,
.visible-lg-block,
.visible-lg-inline,
.visible-lg-inline-block {
  display: none !important;
}

@media (max-width: $screen-xs-max) {
  @include responsive-visibility('.visible-xs');
}
.visible-xs-block {
  @media (max-width: $screen-xs-max) {
    display: block !important;
  }
}
.visible-xs-inline {
  @media (max-width: $screen-xs-max) {