sentry/static/less/includes/bootstrap/component-animations.less

// stylelint-disable selector-no-qualifying-type

//
// Component animations
// --------------------------------------------------

.fade {
  opacity: 0;
  transition: opacity 0.15s 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: 0.35s;
  transition-timing-function: ease;
}