I’m trying to create panorama markers with CSS2DObject, After I add the marker object into the scene,I got the result like bellow picture
but when I pan the panorama, the marker changed its direction.
As you can seen, the arrow points the wrong direction because CSS2DObject always face towards the camera,I wonder if I could do something to change this behavior and get the right result.
Actually it didn’t. 
The 2D-marker is still pointing horizontally to the right. It’s just that it doesn’t point to your 3D-object anymore, which changed position/orientation.
You’l probably have to combine a 2D-label (so it remains readable from all directions) with a 3D-arrow, which will follow all scene rotations and will always point into the correct direction.
many thanks for your advice,it works fine.