.modal {
  display: none;
  position: fixed;
  padding-top: 100px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  max-height: 100vh;
  overflow: auto;
  background-color: rgb(0, 0, 0);
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 10;
}
.modal-content {
  position: relative;
  background-color: white;
  padding: 30px 50px 0 50px;
  margin: auto;
  width: 75%;
  -webkit-animation-name: animatetop;
  -webkit-animation-duration: 0.4s;
  animation-name: animatetop;
  animation-duration: 0.4s
}
.close-btn {
  float: right;
  color: lightgray;
  cursor: pointer;
  font-size: 24px;
  font-weight: bold;
}
.close-btn:hover {
  color: darkgray;
}
@-webkit-keyframes animatetop {
  from {top:-300px; opacity:0}
  to {top:0; opacity:1}
}
@keyframes animatetop {
  from {top:-300px; opacity:0}
  to {top:0; opacity:1}
}