body,html{
  
  width: auto;
  max-width: 650px;
  position: relative;
  margin: auto;
  
}

#sidebar_wrap{
  
  float: left;
  width: 0;
  overflow-x: hidden;
  overflow-y: auto;
  background: white;
  position: fixed;
  top: 0;
  bottom: 0;
  z-index: 3;
  background-color: #41474B;

}

.panel-left-menu-fon {
  
  background-color: #41474B;
  padding: 10px;

}