<commit_before>//
// Buttons
// ==================================================


// Mixins
// --------------------------------------------------

// Button sizes
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius)
{
  padding: @padding-vertical @padding-horizontal;
  font-size: @font-size;
  line-height: @line-height;
  border-radius: @border-radius;
}


// Base styles
// --------------------------------------------------

// Core styles
.btn
{
  display: inline-block;
  margin-bottom: 0; // For input.btn
  font-weight: @btn-font-weight;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
  border: 1px solid transparent;
  white-space: nowrap;
  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base);
  .user-select(none);

  &:focus
  {
    .tab-focus();
  }

  &:hover,
  &:focus
  {
    color: @btn-default-color;
    text-decoration: none;
  }

  &:active,
  &.active
  {
    outline: 0;
    background-image: none;
    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
  }

  &.disabled,
  &[disabled],
  fieldset[disabled] &
  {
    cursor: not-allowed;
    pointer-events: none; // Future-proof disabling of clicks
    .opacity(.65);
    .box-shadow(none);
  }

}


// Alternate buttons
// --------------------------------------------------

.btn-default
{
  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
}
.btn-primary
{
  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
}
// Warning appears as orange
.btn-warning
{
  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
}
// Danger and error appear as red
.btn-danger
{
  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
}
// Success appears as green
.btn-success
{
  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
}
// Info appears as blue-green
.btn-info
{
  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
}


// Link buttons
// -------------------------

// Make a button look and behave like a link
.btn-link
{
  color: @link-color;
  font-weight: normal;
  cursor: pointer;
  border-radius: 0;

  &,
  &:active,
  &[disabled],
  fieldset[disabled] &
  {
    background-color: transparent;
    .box-shadow(none);
  }
  &,
  &:hover,
  &:focus,
  &:active
  {
    border-color: transparent;
  }
  &:hover,
  &:focus
  {
    color: @link-hover-color;
    text-decoration: underline;
    background-color: transparent;
  }
  &[disabled],
  fieldset[disabled] &
  {
    &:hover,
    &:focus
    {
      color: @btn-link-disabled-color;
      text-decoration: none;
    }
  }
}


// Button Sizes
// --------------------------------------------------

.btn-lg
{
  // line-height: ensure even-numbered height of button next to large input
  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
}
.btn-sm,
.btn-xs
{
  // line-height: ensure proper height of button next to small input
  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
}
.btn-xs
{
  padding: 1px 5px;
}


// Block button
// --------------------------------------------------

.btn-block
{
  display: block;
  width: 100%;
  padding-left: 0;
  padding-right: 0;
}

// Vertically space out multiple block buttons
.btn-block + .btn-block
{
  margin-top: 5px;
}

// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"]
{
  &.btn-block
  {
    width: 100%;
  }
}



//
// Button groups
// ==================================================

//
// Button carets
// Match the button text color to the arrow/caret for indicating dropdown-ness.

.caret
{
  .btn-default &
  {
    border-top-color: @btn-default-color;
  }
  .btn-primary &,
  .btn-success &,
  .btn-warning &,
  .btn-danger &,
  .btn-info &
  {
    border-top-color: #fff;
  }
}
.dropup
{
  & .btn-default .caret
  {
    border-bottom-color: @btn-default-color;
  }
  .btn-primary,
  .btn-success,
  .btn-warning,
  .btn-danger,
  .btn-info
  {
   .caret
   {
      border-bottom-color: #fff;
    }
  }
}

// Make the div behave like a button
.btn-group,
.btn-group-vertical
{
  position: relative;
  display: inline-block;
  vertical-align: middle; // match .btn alignment given font-size hack above
  > .btn
  {
    position: relative;
    float: left;
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active
    {
      z-index: 2;
    }
    &:focus
    {
      // Remove focus outline when dropdown JS adds it after closing the menu
      outline: none;
    }
  }
}

// Prevent double borders when buttons are next to each other
.btn-group
{
  .btn + .btn,
  .btn + .btn-group,
  .btn-group + .btn,
  .btn-group + .btn-group
  {
    margin-left: -1px;
  }
}

// Optional: Group multiple button groups together for a toolbar
.btn-toolbar
{
  .clearfix();

  .btn-group
  {
    float: left;
  }
  // Space out series of button groups
  > .btn,
  > .btn-group
  {
    + .btn,
    + .btn-group
    {
      margin-left: 5px;
    }
  }
}

.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle)
{
  border-radius: 0;
}

// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
.btn-group > .btn:first-child
{
  margin-left: 0;
  &:not(:last-child):not(.dropdown-toggle)
  {
    .border-right-radius(0);
  }
}
// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
.btn-group > .btn:last-child:not(:first-child),
.btn-group > .dropdown-toggle:not(:first-child)
{
  .border-left-radius(0);
}

// Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
.btn-group > .btn-group
{
  float: left;
}
.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn
{
  border-radius: 0;
}
.btn-group > .btn-group:first-child
{
  > .btn:last-child,
  > .dropdown-toggle
  {
    .border-right-radius(0);
  }
}
.btn-group > .btn-group:last-child > .btn:first-child
{
  .border-left-radius(0);
}

// On active and open, don't show outline
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle
{
  outline: 0;
}


// Sizing
//
// Remix the default button sizing classes into new ones for easier manipulation.

.btn-group-xs > .btn
{ .btn-xs(); }
.btn-group-sm > .btn
{ .btn-sm(); }
.btn-group-lg > .btn
{ .btn-lg(); }


// Split button dropdowns
// ----------------------

// Give the line between buttons some depth
.btn-group > .btn + .dropdown-toggle
{
  padding-left: 8px;
  padding-right: 8px;
}
.btn-group > .btn-lg + .dropdown-toggle
{
  padding-left: 12px;
  padding-right: 12px;
}

// The clickable button for toggling the menu
// Remove the gradient and set the same inset shadow as the :active state
.btn-group.open .dropdown-toggle
{
  .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
}


// Reposition the caret
.btn .caret
{
  margin-left: 0;
}
// Carets in other button sizes
.btn-lg .caret
{
  border-width: @caret-width-large @caret-width-large 0;
  border-bottom-width: 0;
}
// Upside down carets for .dropup
.dropup .btn-lg .caret
{
  border-width: 0 @caret-width-large @caret-width-large;
}


// Vertical button groups
// ----------------------

.btn-group-vertical
{
  > .btn,
  > .btn-group
  {
    display: block;
    float: none;
    width: 100%;
    max-width: 100%;
  }

  // Clear floats so dropdown menus can be properly placed
  > .btn-group
  {
    .clearfix();
    > .btn
    {
      float: none;
    }
  }

  > .btn + .btn,
  > .btn + .btn-group,
  > .btn-group + .btn,
  > .btn-group + .btn-group
  {
    margin-top: -1px;
    margin-left: 0;
  }
}

.btn-group-vertical > .btn
{
  &:not(:first-child):not(:last-child)
  {
    border-radius: 0;
  }
  &:first-child:not(:last-child)
  {
    border-top-right-radius: @border-radius-base;
    .border-bottom-radius(0);
  }
  &:last-child:not(:first-child)
  {
    border-bottom-left-radius: @border-radius-base;
    .border-top-radius(0);
  }
}
.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn
{
  border-radius: 0;
}
.btn-group-vertical > .btn-group:first-child
{
  > .btn:last-child,
  > .dropdown-toggle
  {
    .border-bottom-radius(0);
  }
}
.btn-group-vertical > .btn-group:last-child > .btn:first-child
{
  .border-top-radius(0);
}



// Justified button groups
// ----------------------

.btn-group-justified
{
  display: table;
  width: 100%;
  table-layout: fixed;
  border-collapse: separate;
  .btn
  {
    float: none;
    display: table-cell;
    width: 1%;
  }
}


// Checkbox and radio options
[data-toggle="buttons"] > .btn > input[type="radio"],
[data-toggle="buttons"] > .btn > input[type="checkbox"]
{
  display: none;
}
<commit_msg> * remove class name btn-default.<commit_after>//
// Buttons
// ==================================================


// Mixins
// --------------------------------------------------

// Button sizes
.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius)
{
  padding: @padding-vertical @padding-horizontal;
  font-size: @font-size;
  line-height: @line-height;
  border-radius: @border-radius;
}


// Base styles
// --------------------------------------------------

// Core styles
.btn
{
  display: inline-block;
  margin-bottom: 0; // For input.btn
  font-weight: @btn-font-weight;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
  border: 1px solid transparent;
  white-space: nowrap;
  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base);
  .user-select(none);

  &:focus
  {
    .tab-focus();
  }

  &:hover,
  &:focus
  {
    color: @btn-default-color;
    text-decoration: none;
  }

  &:active,
  &.active
  {
    outline: 0;
    background-image: none;
    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
  }

  &.disabled,
  &[disabled],
  fieldset[disabled] &
  {
    cursor: not-allowed;
    pointer-events: none; // Future-proof disabling of clicks
    .opacity(.65);
    .box-shadow(none);
  }

}


// Alternate buttons
// --------------------------------------------------

// .btn-default,
.btn
{
  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
}
.btn-primary
{
  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
}
// Warning appears as orange
.btn-warning
{
  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
}
// Danger and error appear as red
.btn-danger
{
  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
}
// Success appears as green
.btn-success
{
  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
}
// Info appears as blue-green
.btn-info
{
  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
}


// Link buttons
// -------------------------

// Make a button look and behave like a link
.btn-link
{
  color: @link-color;
  font-weight: normal;
  cursor: pointer;
  border-radius: 0;

  &,
  &:active,
  &[disabled],
  fieldset[disabled] &
  {
    background-color: transparent;
    .box-shadow(none);
  }
  &,
  &:hover,
  &:focus,
  &:active
  {
    border-color: transparent;
  }
  &:hover,
  &:focus
  {
    color: @link-hover-color;
    text-decoration: underline;
    background-color: transparent;
  }
  &[disabled],
  fieldset[disabled] &
  {
    &:hover,
    &:focus
    {
      color: @btn-link-disabled-color;
      text-decoration: none;
    }
  }
}


// Button Sizes
// --------------------------------------------------

.btn-lg
{
  // line-height: ensure even-numbered height of button next to large input
  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
}
.btn-sm,
.btn-xs
{
  // line-height: ensure proper height of button next to small input
  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
}
.btn-xs
{
  padding: 1px 5px;
}


// Block button
// --------------------------------------------------

.btn-block
{
  display: block;
  width: 100%;
  padding-left: 0;
  padding-right: 0;
}

// Vertically space out multiple block buttons
.btn-block + .btn-block
{
  margin-top: 5px;
}

// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"]
{
  &.btn-block
  {
    width: 100%;
  }
}



//
// Button groups
// ==================================================

//
// Button carets
// Match the button text color to the arrow/caret for indicating dropdown-ness.

.caret
{
  .btn-default &
  {
    border-top-color: @btn-default-color;
  }
  .btn-primary &,
  .btn-success &,
  .btn-warning &,
  .btn-danger &,
  .btn-info &
  {
    border-top-color: #fff;
  }
}
.dropup
{
  & .btn-default .caret
  {
    border-bottom-color: @btn-default-color;
  }
  .btn-primary,
  .btn-success,
  .btn-warning,
  .btn-danger,
  .btn-info
  {
   .caret
   {
      border-bottom-color: #fff;
    }
  }
}

// Make the div behave like a button
.btn-group,
.btn-group-vertical
{
  position: relative;
  display: inline-block;
  vertical-align: middle; // match .btn alignment given font-size hack above
  > .btn
  {
    position: relative;
    float: left;
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active
    {
      z-index: 2;
    }
    &:focus
    {
      // Remove focus outline when dropdown JS adds it after closing the menu
      outline: none;
    }
  }
}

// Prevent double borders when buttons are next to each other
.btn-group
{
  .btn + .btn,
  .btn + .btn-group,
  .btn-group + .btn,
  .btn-group + .btn-group
  {
    margin-left: -1px;
  }
}

// Optional: Group multiple button groups together for a toolbar
.btn-toolbar
{
  .clearfix();

  .btn-group
  {
    float: left;
  }
  // Space out series of button groups
  > .btn,
  > .btn-group
  {
    + .btn,
    + .btn-group
    {
      margin-left: 5px;
    }
  }
}

.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle)
{
  border-radius: 0;
}

// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
.btn-group > .btn:first-child
{
  margin-left: 0;
  &:not(:last-child):not(.dropdown-toggle)
  {
    .border-right-radius(0);
  }
}
// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
.btn-group > .btn:last-child:not(:first-child),
.btn-group > .dropdown-toggle:not(:first-child)
{
  .border-left-radius(0);
}

// Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
.btn-group > .btn-group
{
  float: left;
}
.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn
{
  border-radius: 0;
}
.btn-group > .btn-group:first-child
{
  > .btn:last-child,
  > .dropdown-toggle
  {
    .border-right-radius(0);
  }
}
.btn-group > .btn-group:last-child > .btn:first-child
{
  .border-left-radius(0);
}

// On active and open, don't show outline
.btn-group .dropdown-toggle:active,
.btn-group.open .dropdown-toggle
{
  outline: 0;
}


// Sizing
//
// Remix the default button sizing classes into new ones for easier manipulation.

.btn-group-xs > .btn
{ .btn-xs(); }
.btn-group-sm > .btn
{ .btn-sm(); }
.btn-group-lg > .btn
{ .btn-lg(); }


// Split button dropdowns
// ----------------------

// Give the line between buttons some depth
.btn-group > .btn + .dropdown-toggle
{
  padding-left: 8px;
  padding-right: 8px;
}
.btn-group > .btn-lg + .dropdown-toggle
{
  padding-left: 12px;
  padding-right: 12px;
}

// The clickable button for toggling the menu
// Remove the gradient and set the same inset shadow as the :active state
.btn-group.open .dropdown-toggle
{
  .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
}


// Reposition the caret
.btn .caret
{
  margin-left: 0;
}
// Carets in other button sizes
.btn-lg .caret
{
  border-width: @caret-width-large @caret-width-large 0;
  border-bottom-width: 0;
}
// Upside down carets for .dropup
.dropup .btn-lg .caret
{
  border-width: 0 @caret-width-large @caret-width-large;
}


// Vertical button groups
// ----------------------

.btn-group-vertical
{
  > .btn,
  > .btn-group
  {
    display: block;
    float: none;
    width: 100%;
    max-width: 100%;
  }

  // Clear floats so dropdown menus can be properly placed
  > .btn-group
  {
    .clearfix();
    > .btn
    {
      float: none;
    }
  }

  > .btn + .btn,
  > .btn + .btn-group,
  > .btn-group + .btn,
  > .btn-group + .btn-group
  {
    margin-top: -1px;
    margin-left: 0;
  }
}

.btn-group-vertical > .btn
{
  &:not(:first-child):not(:last-child)
  {
    border-radius: 0;
  }
  &:first-child:not(:last-child)
  {
    border-top-right-radius: @border-radius-base;
    .border-bottom-radius(0);
  }
  &:last-child:not(:first-child)
  {
    border-bottom-left-radius: @border-radius-base;
    .border-top-radius(0);
  }
}
.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn
{
  border-radius: 0;
}
.btn-group-vertical > .btn-group:first-child
{
  > .btn:last-child,
  > .dropdown-toggle
  {
    .border-bottom-radius(0);
  }
}
.btn-group-vertical > .btn-group:last-child > .btn:first-child
{
  .border-top-radius(0);
}



// Justified button groups
// ----------------------

.btn-group-justified
{
  display: table;
  width: 100%;
  table-layout: fixed;
  border-collapse: separate;
  .btn
  {
    float: none;
    display: table-cell;
    width: 1%;
  }
}


// Checkbox and radio options
[data-toggle="buttons"] > .btn > input[type="radio"],
[data-toggle="buttons"] > .btn > input[type="checkbox"]
{
  display: none;
}

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