#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;
}

span {
  color: #4caf50;
}