.pwa_popup {
    position: relative;
    display: inline-block;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }
  
  .pwa_popup .pwa_popuptext {
    visibility: hidden;
    width: /*160px*/75%;
    background-color: #fff;
    color: #000;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: /*absolute*/fixed;
    z-index: 1;
    bottom: /*1*/5%;
    left: /*50*/12.5%;
    /*margin-left: -80px;*/
    box-shadow: 0 0 5px grey;
  }
  
  .pwa_popup .pwa_popuptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #555 transparent transparent transparent;
  }
  .pwa_popup .show {
    visibility: visible;
    -webkit-animation: PWAfadeIn 1s;
    animation: PWAfadeIn 1s;
  }
  
@-webkit-keyframes PWAfadeIn {
    from {opacity: 0;} 
    to {opacity: 1;}
  }
  
  @keyframes PWAfadeIn {
    from {opacity: 0;}
    to {opacity:1 ;}
  }