a#tapwindow_background {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba( 0 , 0 , 0 , 0.8 );
}


ul.tapwindow {
  display: block;
  position: fixed;
  top: -100vh;
  left: calc( 50% - 400px );
  width: 800px;
  max-height: 100vh;
  padding: 30px 0 0;
  background-color: rgba( 255 , 255 , 255 , 0.9 );
  text-align: left;
  overflow: auto;
  transition: 0.4s;
  opacity: 0;
}


ul.tapwindow li {
  display: inline-block;
  width: 50%;
  text-align: center;
  padding: 1em 0;
  font-size: 1.2em;
  font-weight: bold;
}
ul.tapwindow li:hover {
  background-color: rgba( 127 , 127 , 255 , 0.6 );
  cursor: pointer;
}




@media screen and ( max-width:700px )
{
  ul.tapwindow {
    left: calc( 50% - 40vw );
    width: 80vw;
    padding-top: 1.5em;
  }


  ul.tapwindow li {
    width: 100%;
    padding: 0.8em 0;
    font-size: 0.8em;
    font-weight: normal;
  }
}