twbs--bootstrap/scss/_utilities.scss

//
// Utility classes
// --------------------------------------------------


// Floats
.clearfix {
  @include clearfix();
}
.center-block {
  @include center-block();
}
.pull-right {
  float: right !important;
}
.pull-left {
  float: left !important;
}


// Inverse
.inverse {
  color: $gray-lighter;
  background-color: $gray-dark;
}

// Spacing
.p-a {
  padding: $spacer;
}
.p-h {
  padding-right: $spacer;
  padding-left: $spacer;
}
.p-v {
  padding-top: $spacer;
  padding-bottom: $spacer;
}

// Positioning
.pos-f-t {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: $zindex-navbar-fixed;
}

// Always hide an element with the `hidden` HTML attribute (from PureCSS).
[hidden] {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.text-hide {
  @include text-hide();
}


// For Affix plugin
.affix {
  position: fixed;
}

// Alignment
.text-left           { text-align: left; }
.text-right          { text-align: right; }
.text-center         { text-align: center; }
.text-justify        { text-align: justify; }
.text-nowrap         { white-space: nowrap; }
.text-truncate       { @include text-truncate; }

// Transformation
.text-lowercase      { text-transform: lowercase; }
.text-uppercase      { text-transform: uppercase; }
.text-capitalize     { text-transform: capitalize; }

// Contextual colors

.text-muted {
  color: $text-muted;
}

@include text-emphasis-variant('.text-primary', $brand-primary);

@include text-emphasis-variant('.text-success', $state-success-text);

@include text-emphasis-variant('.text-info', $state-info-text);

@include text-emphasis-variant('.text-warning', $state-warning-text);

@include text-emphasis-variant('.text-danger', $state-danger-text);

// Contextual backgrounds
// For now we'll leave these alongside the text classes until v4 when we can
// safely shift things around (per SemVer rules).

.bg-primary {
  // Given the contrast here, this is the only class to have its color inverted
  // automatically.
  color: #fff;
}

@include bg-variant('.bg-primary', $brand-primary);

@include bg-variant('.bg-success', $state-success-bg);

@include bg-variant('.bg-info', $state-info-bg);

@include bg-variant('.bg-warning', $state-warning-bg);

@include bg-variant('.bg-danger', $state-danger-bg);