// collapse
// ----------------------------------------

.collapse {
    display: none;
    &.in {
    	display: block;
    }
}
.collapsing {
    position: relative;
    height: 0;
    overflow: hidden;
    -webkit-transition-timing-function: ease;
    -o-transition-timing-function: ease;
    transition-timing-function: ease;
    -webkit-transition-duration: $collpase-duration;
    -o-transition-duration: $collpase-duration;
    transition-duration: $collpase-duration;
    -webkit-transition-property: height,visibility;
    -o-transition-property: height,visibility;
    transition-property: height,visibility;
}
