// // Button groups // ————————————————–

// 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;
  }
}

}

// 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 {

margin-left: -5px; // Offset the first child's margin
&:extend(.clearfix all);

.btn,
.btn-group,
.input-group {
  float: left;
}
> .btn,
> .btn-group,
> .input-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 that a .dropdown-menu is used 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:not(:last-child) {

> .btn:last-child,
> .dropdown-toggle {
  .border-right-radius(0);
}

} .btn-group > .btn-group:last-child:not(:first-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 { &:extend(.btn-xs); } .btn-group-sm > .btn { &:extend(.btn-sm); } .btn-group-lg > .btn { &:extend(.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));

// Show no shadow for `.btn-link` since it has no other button styles.
&.btn-link {
  .box-shadow(none);
}

}

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

// Clear floats so dropdown menus can be properly placed
> .btn-group {
  &:extend(.clearfix all);
  > .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-radius(@btn-border-radius-base);
  .border-bottom-radius(0);
}
&:last-child:not(:first-child) {
  .border-top-radius(0);
  .border-bottom-radius(@btn-border-radius-base);
}

} .btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {

border-radius: 0;

} .btn-group-vertical > .btn-group:first-child:not(:last-child) {

> .btn:last-child,
> .dropdown-toggle {
  .border-bottom-radius(0);
}

} .btn-group-vertical > .btn-group:last-child:not(:first-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,
> .btn-group {
  float: none;
  display: table-cell;
  width: 1%;
}
> .btn-group .btn {
  width: 100%;
}

> .btn-group .dropdown-menu {
  left: auto;
}

}

// Checkbox and radio options // // In order to support the browser's form validation feedback, powered by the // `required` attribute, we have to “hide” the inputs via `clip`. We cannot use // `display: none;` or `visibility: hidden;` as that also hides the popover. // Simply visually hiding the inputs via `opacity` would leave them clickable in // certain cases which is prevented by using `clip` and `pointer-events`. // This way, we ensure a DOM element is visible to position the popover from. // // See github.com/twbs/bootstrap/pull/12794 and // github.com/twbs/bootstrap/pull/14559 for more information.

data-toggle=“buttons”

{

> .btn,
> .btn-group > .btn {
  input[type="radio"],
  input[type="checkbox"] {
    position: absolute;
    clip: rect(0,0,0,0);
    pointer-events: none;
  }
}

}