gitlabhq/app/assets/stylesheets/gitlab_bootstrap/buttons.scss

.btn {
  @include bg-dark-gray-gradient;
  border-color:#aaa;
  &:hover {
    @include bg-gray-gradient;
    border-color:#bbb;
    color:#333;
  }

  &.btn-primary {
    background:$link_color;
    border-color: #2A79A3;
    &:hover {
      background:$blue_link;
      color:#fff;
    }
  }
  &.primary {
    @extend .btn-primary;
  }

  &.success {
    color: #fff;
    text-shadow: 0 0 1px #111;
    background: #5bb75b;;
    font-weight: bold;

    &:hover {
      background-color: #51a351;
      color: #fff;
    }
  }

  &.save-btn { 
    @extend .wide;
    @extend .primary;
  }

  &.cancel-btn { 
    float:right;
  }

  &.wide { 
    padding-left:30px;
    padding-right:30px;
  }

  &.danger,
  &.btn-danger {
    color:#fff;
    background: #DA4E49;
    border-color: #BD362F;

    &:hover {
      color:#fff;
      background: #EE4E49;
    }
  }

  &.danger {
    @extend .btn-danger;
  }

  &.small {
    @extend .btn-small;
  }

  &.active {
    border-color:#aaa;
    background-color:#ccc;
  }

  &.very_small {
    font-size:11px;
    padding:2px 6px;
    margin:2px;
  }

  &.grouped {
    margin-right:7px;
    float:left;
  }

  &.padded {
    margin-right:3px;
    padding:4px 10px 4px;
  }
}