body {
  background: url(background.png);
  background-repeat: no-repeat;
  background-size: cover;
  text-align: center;
}
#upload {
  color: white;
  background: #222222;
  border-radius: 20px;
}
h1 {
  margin: 70px 0px 10px 0px;
  color: white;
}
input {
  height: 30px;
  border-radius: 15px;
}
#encrypt {
  display: block;
  margin: auto;
  color: white;
  background: #222222;
  height: 60px;
  border-radius: 20px
}
#decrypt {
  display: inline-block;
  margin: auto;
  color: white;
  background: #222222;
  height: 60px;
  border-radius: 20px
}