#popup {
  width:700px;
  display:none;
  position:absolute;
  margin:0 auto;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 9999;
  background-color: #aed460;
}
#close{
  font-size:30px; 
  padding-left:96%;
  padding-top:1%; 
  margin:auto;
  position: absolute;
}
#popup h5{
  text-align: center;
  font-size: 25px;
  color:white;
  padding:20px;
}
@media (max-width:768px){
  #popup {
    width:350px;
  }
  #close{
    font-size:30px; 
    padding-left:94%;
    padding-top:1%; 
    margin:auto;
    position: absolute;
  }
  #popup h5{padding-top:50px;
  padding-bottom: 30px;}
  }