twbs--bootstrap/scss/_type.scss

//
// Headings
//

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: $headings-font-family;
  font-weight: $headings-font-weight;
  line-height: $headings-line-height;
  color: $headings-color;
}

h1, .h1,
h2, .h2,
h3, .h3 {
  margin-bottom: $headings-margin-bottom;
}
h4, .h4,
h5, .h5,
h6, .h6 {
  margin-bottom: $headings-margin-bottom;
}

h1, .h1 { font-size: $font-size-h1; }
h2, .h2 { font-size: $font-size-h2; }
h3, .h3 { font-size: $font-size-h3; }
h4, .h4 { font-size: $font-size-h4; }
h5, .h5 { font-size: $font-size-h5; }
h6, .h6 { font-size: $font-size-h6; }

.lead {
  font-size: $lead-font-size;
  font-weight: $lead-font-weight;
}

// Type display classes
.display-1 {
  font-size: $display1-size;
  font-weight: $display1-weight;
}
.display-2 {
  font-size: $display2-size;
  font-weight: $display2-weight;
}
.display-3 {
  font-size: $display3-size;
  font-weight: $display3-weight;
}
.display-4 {
  font-size: $display4-size;
  font-weight: $display4-weight;
}


//
// Horizontal rules
//

hr {
  margin-top: $spacer-y;
  margin-bottom: $spacer-y;
  border: 0;
  border-top: $hr-border-width solid $hr-border-color;
}


//
// Emphasis
//

small,
.small {
  font-size: 80%;
  font-weight: normal;
}

mark,
.mark {
  padding: .2em;
  background-color: $state-warning-bg;
}


//
// Lists
//

// Unstyled keeps list items block level, just removes default browser padding and list-style
.list-unstyled {
  padding-left: 0;
  list-style: none;
}

// Inline turns list items into inline-block
.list-inline {
  padding-left: 0;
  margin-left: -5px;
  list-style: none;

  > li {
    display: inline-block;
    padding-right: 5px;
    padding-left: 5px;
  }
}

// Horizontal description lists w/ grid classes
.dl-horizontal {
  margin-right: -$grid-gutter-width;
  margin-left: -$grid-gutter-width;
  @include clearfix;
}


//
// Misc
//

// Builds on `abbr`
.initialism {
  font-size: 90%;
  text-transform: uppercase;
}

// Blockquotes
.blockquote {
  padding: ($spacer / 2) $spacer;
  margin-bottom: $spacer;
  font-size: $blockquote-font-size;
  border-left: .25rem solid $blockquote-border-color;

  p,
  ul,
  ol {
    &:last-child {
      margin-bottom: 0;
    }
  }

  footer {
    display: block;
    font-size: 80%; // back to default font-size
    line-height: $line-height;
    color: $blockquote-small-color;

    &::before {
      content: "\2014 \00A0"; // em dash, nbsp
    }
  }
}

// Opposite alignment of blockquote
.blockquote-reverse {
  padding-right: $spacer;
  padding-left: 0;
  text-align: right;
  border-right: .25rem solid $blockquote-border-color;
  border-left: 0;

  // Account for citation
  footer {
    &::before { content: ""; }
    &::after {
      content: "\00A0 \2014"; // nbsp, em dash
    }
  }
}

//
// Figures
//

.figure {
  // Ensures the caption's text aligns with the image.
  display: inline-block;

  > img {
    @extend .img-fluid;
    margin-bottom: ($spacer-y / 2);
    line-height: 1;
  }
}

.figure-caption {
  font-size: 90%;
  color: $gray-light;
}