.modal{
  padding: 50px;
  background: #FFFFFF;
  position: fixed; top: 50%; left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}
input{
font-size: 36px;
height: 36px;
width: 500px;
}
.center {
  text-align: center;
}