.button{
    margin-right:1cm;
}
.btn {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -ms-touch-action: manipulation;
    touch-action: manipulation;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-image: none;
    border: 1px solid transparent;
        border-top-color: transparent;
        border-right-color: transparent;
        border-bottom-color: transparent;
        border-left-color: transparent;
    border-radius: 4px;
    width: 3.5cm;
}
.collapse {
    display: none;
    margin-left: 6cm;
    margin-top: 0.5cm;
}
//
// Component animations
// --------------------------------------------------

// Heads up!
//
// We don't use the `.opacity()` mixin here since it causes a bug with text
// fields in IE7-8. Source: https://github.com/twbs/bootstrap/pull/3552.

.fade {
  opacity: 0;
  .transition(opacity .15s linear);
  &.in {
    opacity: 1;
  }
}

.collapse {
  display: none;

  &.in      { display: block; }
  tr&.in    { display: table-row; }
  tbody&.in { display: table-row-group; }
}

.collapsing {
  position: relative;
  height: 0;
  overflow: hidden;
  .transition-property(~"height, visibility");
  .transition-duration(.35s);
  .transition-timing-function(ease);
}