Hacked version of Bootstrap 3.0 responsive utilities to support landscape orientation for phones

_responsive-utilities.scss

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


// IE10 Metro responsive
// Required for Windows 8 Metro split-screen snapping with IE10
//
// Source: http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/
@-ms-viewport{
  width: device-width;
}

// IE10 on Windows Phone 8
// IE10 on WP8 doesn't report CSS pixels, but actual device pixels. In
// other words, say on a Lumia, you'll get 768px as the device width,
// meaning users will see the tablet styles and not phone styles.
//
// Alternatively you can override this with JS (see source below), but
// we won't be doing that here given our limited scope.
//
// Source: http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
@media screen and (max-width: 400px) {
  @-ms-viewport{
    width: 320px;
  }
}

// Hide from screenreaders and browsers
// Credit: HTML5 Boilerplate
.hidden {
  display: none !important;
  visibility: hidden !important;
}

// Visibility utilities

// HACK - Mid-Small breakpoint
$screen-ms: 480px !default;
$screen-ms-min: $screen-ms !default;
$screen-ms-max: ($screen-sm-min - 1) !default;

// HACK - Redefined Extra Small max value (Can't override non-default variables in SASS)
$screen-xs-max: ($screen-ms-min - 1) !default;

@include responsive-invisibility(".visible-xs");
  @media (max-width: $screen-xs-max) {
    @include responsive-visibility(".visible-xs");
  }
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-visibility(".visible-xs.visible-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-visibility(".visible-xs.visible-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-visibility(".visible-xs.visible-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-visibility(".visible-xs.visible-lg");
}

// HACK - mid-small classes
@include responsive-invisibility(".visible-ms");
@media (max-width: $screen-xs-max) {
  @include responsive-visibility(".visible-ms.visible-xs");
}
  @media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
    @include responsive-visibility(".visible-ms");
  }
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-visibility(".visible-ms.visible-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-visibility(".visible-ms.visible-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-visibility(".visible-ms.visible-lg");
}

@include responsive-invisibility(".visible-sm");
@media (max-width: $screen-xs-max) {
  @include responsive-visibility(".visible-sm.visible-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-visibility(".visible-sm.visible-ms");
}
  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
    @include responsive-visibility(".visible-sm");
  }
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-visibility(".visible-sm.visible-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-visibility(".visible-sm.visible-lg");
}

@include responsive-invisibility(".visible-md");
@media (max-width: $screen-xs-max) {
  @include responsive-visibility(".visible-md.visible-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-visibility(".visible-md.visible-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-visibility(".visible-md.visible-sm");
}
  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
    @include responsive-visibility(".visible-md");
  }
@media (min-width: $screen-lg-min) {
  @include responsive-visibility(".visible-md.visible-lg");
}

@include responsive-invisibility(".visible-lg");
@media (max-width: $screen-xs-max) {
  @include responsive-visibility(".visible-lg.visible-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-visibility(".visible-lg.visible-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-visibility(".visible-lg.visible-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-visibility(".visible-lg.visible-md");
}
  @media (min-width: $screen-lg-min) {
    @include responsive-visibility(".visible-lg");
  }

@include responsive-visibility(".hidden-xs");
  @media (max-width: $screen-xs-max) {
    @include responsive-invisibility(".hidden-xs");
  }
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-invisibility(".hidden-xs.hidden-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-invisibility(".hidden-xs.hidden-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-invisibility(".hidden-xs.hidden-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-invisibility(".hidden-xs.hidden-lg");
}

@include responsive-visibility(".hidden-ms");
@media (max-width: $screen-xs-max) {
  @include responsive-invisibility(".hidden-ms.hidden-xs");
}
  @media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
    @include responsive-invisibility(".hidden-ms");
  }
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-invisibility(".hidden-ms.hidden-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-invisibility(".hidden-ms.hidden-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-invisibility(".hidden-ms.hidden-lg");
}

@include responsive-visibility(".hidden-sm");
@media (max-width: $screen-xs-max) {
  @include responsive-invisibility(".hidden-sm.hidden-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-invisibility(".hidden-sm.hidden-ms");
}
  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
    @include responsive-invisibility(".hidden-sm");
  }
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-invisibility(".hidden-sm.hidden-md");
}
@media (min-width: $screen-lg-min) {
  @include responsive-invisibility(".hidden-sm.hidden-lg");
}

@include responsive-visibility(".hidden-md");
@media (max-width: $screen-xs-max) {
  @include responsive-invisibility(".hidden-md.hidden-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-invisibility(".hidden-md.hidden-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-invisibility(".hidden-md.hidden-sm");
}
  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
    @include responsive-invisibility(".hidden-md");
  }
@media (min-width: $screen-lg-min) {
  @include responsive-invisibility(".hidden-md.hidden-lg");
}

@include responsive-visibility(".hidden-lg");
@media (max-width: $screen-xs-max) {
  @include responsive-invisibility(".hidden-lg.hidden-xs");
}
@media (min-width: $screen-ms-min) and (max-width: $screen-ms-max) {
  @include responsive-invisibility(".hidden-lg.hidden-ms");
}
@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
  @include responsive-invisibility(".hidden-lg.hidden-sm");
}
@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
  @include responsive-invisibility(".hidden-lg.hidden-md");
}
  @media (min-width: $screen-lg-min) {
    @include responsive-invisibility(".hidden-lg");
  }

// Print utilities
@include responsive-invisibility(".visible-print");
@media print {
  @include responsive-visibility(".visible-print");
  @include responsive-invisibility(".hidden-print");
}