--- /dev/null
+//
+// 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;
+ @include transition(opacity .15s linear);
+ &.in {
+ opacity: 1;
+ }
+}
+
+.collapse {
+ display: none;
+
+ &.in {
+ display: block;
+ }
+ // [converter] extracted tr&.in to tr.collapse.in
+ // [converter] extracted tbody&.in to tbody.collapse.in
+}
+
+tr.collapse.in {
+ display: table-row;
+}
+
+tbody.collapse.in {
+ display: table-row-group;
+}
+
+.collapsing {
+ position: relative;
+ height: 0;
+ overflow: hidden;
+ @include transition-property(height, visibility);
+ @include transition-duration(.35s);
+ @include transition-timing-function(ease);
+}