.slick-group-toggle-all.expanded {
    background: url('../images/collapse.gif') no-repeat center center;
    width: 9px;
    height: 9px;
    position: absolute;
    display: inline-block;
    right: 10px;
}

.slick-group-toggle-all.collapsed {
    background: url('../images/expand.gif') no-repeat center center;
    width: 9px;
    height: 9px;
    position: absolute;
    display: inline-block;
    right: 10px;
}

.slick-column-groupable {  
  width: 9px;
  height: 9px;
  display: inline-block;
  margin-left: 4px;
}

.slick-column-groupable-image {
  background: url('../images/column-grouping.png') no-repeat center center;
}

.slick-dropped-grouping {
  display: inline-block;
  margin-right: 5px;
  vertical-align: middle;
  cursor: pointer;
}

.slick-groupby-remove {
  padding-right: 20px;
  display: inline-flex;
} 

.slick-groupby-remove-image {
  background: url(../images/delete.png) no-repeat center right;
}

.slick-placeholder {
  height: 25px;
}

.ui-droppable {
  padding: 5px;
}