.popup {
  display: none;
  position: fixed;
  z-index: 1;
  padding-top: 100px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0,0.4);
}

.popup-content {
  text-align: left;
  background-color: #fefefe;
  margin: auto;
  padding: 20px;
  border: 1px solid #888;
  width: 80%;
}

.popup-close {
  color: #aaaaaa;
  float: right;
  font-size: 50px;
  font-weight: bold;
}

.popup-close:hover,
.popup-close:focus {
  color: #000;
  text-decoration: none;
  cursor: pointer;
}