How do I restrict rotation angles? The rotation just keeps slipping through the limit and stopping forever. When I set 355 as a limit, it stops at 354.993 or something. Can something be done about it? Is the problem with Update frequency?

I am using this code:

if(Input.GetAxis("Mouse X")<0)
{   
    if ((transform.rotation.eulerAngles.y < 4) || (transform.rotation.eulerAngles.y > 355))
    {
       transform.RotateAround(cameraFocus.position, Vector3(0, -1, 0), 5 * Time.deltaTime);
       print(transform.rotation.eulerAngles.y);
    }
}

//right
if(Input.GetAxis("Mouse X")>0)
{
    if ((transform.rotation.eulerAngles.y < 4) || (transform.rotation.eulerAngles.y > 355))
    {
       transform.RotateAround(cameraFocus.position, Vector3.up, 5 * Time.deltaTime);
       print(transform.rotation.eulerAngles.y);
    }
}

I need this for synching cursor movement with camera rotation, obviously.

Please, help.