.Sidebar-DragOver{}
.Sidebar-DragOver.dragging{
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;   
}

.Sidebar-Dragger{
  content:'';
  display:block;
  
  position:absolute;
  z-index:999;
  right:0px;
  top:0px;
  height:100%;
  
  width:10px;
  margin-right:-5px;
  
  cursor:ew-resize;
}
.Sidebar-Dragger.right{
  right:none;
  left:0px;
  margin-right:none;
  margin-left:-5px;
}
.Sidebar-DragOver.dragging .Sidebar-Dragger{
  width:300px;
  margin-right:-150px;
}
.Sidebar-DragOver.dragging .Sidebar-Dragger.right{
  width:300px;
  margin-right:none;
  margin-left:-150px;
}