front/public/usign/css/index.css

* {
  margin: 0;
  padding: 0;
}

#app {
  padding: 20px;
  box-sizing: border-box;
  display: flex;
}

form {
  flex: 1;
}

.form-item {
  display: flex;
}

textarea[type=text] {
  width: 300px;
  height: 80px;
  outline: none;
  padding: 3px;
}

#encrypt {
  margin-top: 20px;
  width: 60px;
  height: 28px;
  background-color: #1ecdcd;
  border: none;
  border-radius: 4px;
  color: #ffffff;
  cursor: pointer;
}

#copy {
  margin-top: 20px;
  width: 60px;
  height: 28px;
  background-color: #ae1ecd;
  border: none;
  border-radius: 4px;
  color: #ffffff;
  cursor: pointer;
}

#payload {
  margin-left: 10px;
}