#app {
    margin: auto;
    margin-top: 50px;
    width: 50%;
    border: 3px solid;
    border-radius: 5px;
    padding: 20px;
    font-family: 'Lato', 'Lucida Grande', 'Lucida Sans Unicode', Tahoma, Sans-Serif;
  }
  
  #payloads {
    margin-bottom: 25px;
  }
  
  h2 {
    font-size: 20px;
    font-weight: bold;
  }
  
  #payload-input {
    margin-bottom: 25px;
  }
  
  button {
    background-color: #2d9fd9;
    border: none;
    border-radius: 4px;
    color: white;
    padding: 10px 15px;
    font-size: 15px;
    margin: 4px 2px;
    cursor: pointer;
  }
  
  input[type="text"] {
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: 2px solid;
    width: 100%;
    height: 40px;
    padding-left: 10px;
  }
  
  #payload-result {
    width: 100%;
    height: 100px;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    border: 2px solid;
    padding: 20px;
  }
  
  span {
    color: #4caf50;
  }