.overlay {
  height: 100%;
  width: 0%;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color:rgba(0,0,0,0.9);
  overflow-x: hidden;
  transition: 0.4s;
}

.overlay-content {
  width: 100%;
  text-align: center;
  margin-top: 30px;
}


input#subm {
  position: relative;
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}

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

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

.g-recaptcha {
    position: relative;
    margin-left: 37%;
    margin-top: 20%;
    margin-right: 40%;
}