.overlay {
  height: 100%;
  width: 100%;
  display: none;
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0, 0.9);
}

.overlay-content {
  position: fixed;
  bottom: 5%;
  width: 100%;
  text-align: center;
  margin-top: 30px;
}
.overlay-msg {
    top:0;
    bottom:10%;
    left:10%;
    word-wrap: break-word;
    position:fixed;
    overflow-y:scroll;
    overflow-x:hidden;
    width: 80%;
    text-align: left;
    margin-top: 50px;
    color: #fff;
    border: 2px solid #404040;
    border-radius: 5px;
}
.overlay-title{
    position: fixed;
    left:45%;
    text-align:center;
    color: #fff;
}

.overlay a {
  padding: 8px;
  text-decoration: none;
  font-size: 36px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.overlay a:hover, .overlay a:focus {
  color: #f1f1f1;
}

.overlay .closebtn {
  position: fixed;
  top: 20px;
  right: 45px;
  font-size: 60px;
}

/*#txtbox {
    border-radius: 25px;
    border: 2px solid #609;
    padding: 20px; 
    height: 15px;    
}*/

@media screen and (max-height: 450px) {
  .overlay a {font-size: 20px}
  .overlay .closebtn {
  font-size: 40px;
  top: 15px;
  right: 35px;
  }
}