.learnm_menu {
  position: absolute;
  top: 0;
}




@media screen and (max-width: 800px) {


  html.mask,
  body.mask {
    overflow: hidden;
    -webkit-overflow-scrolling: auto;
    touch-action: none;
    -ms-touch-action: none;
  }

  html.mask .learn_wrap {
    touch-action-delay: none;
    touch-action: none;
    -ms-touch-action: none;
  }





  /* html.mask,
  body.mask {
    width: 100%;
    height: 100%;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    touch-action: none;
  }

  html.mask .learn_wrap {
    position: fixed;
    width: 100%;
    height: 100%;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    touch-action: none;
  } */





  .learnm_menu.fixed {
    top: 0;
    position: fixed;
  }


  .mask_layer {
    top: 40px
  }


  .learn_menubox {
    top: 85px;
  }


  .learn_menubox.fixed {
    top: 45px;
  }

  .learn_header.fixed .learnm_menu {
    position: fixed;
    top: 0;
  }




}