.EncoderDecoder-decoded {
  display: inline-block;
  width: 50%;
}
.EncoderDecoder-encoded {
  display: inline-block;
  width: 50%;
}

textarea {
  width: 100%;
  height: 20vh;
  overflow: auto;
}

h1, h2 {
  font-family: Arial, Helvetica, sans-serif;
padding-top: 10px;
}

#article {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  padding: 10% 10% 1%;
}