#left-sidr {
  display: block;
  position: fixed;
  top: 5px;
  height: 100%;
  z-index: 999999;
  width: 400px;
  overflow-x: hidden;
  overflow-y: auto;
  font-family: "lucida grande", tahoma, verdana, arial, sans-serif;
  background: #FFF;
  color: #000;
}

#left-sidr.left {
  left: -420px;
  right: auto;
}