h1 {
    color: darkblue;
    font-family: Arial, sans-serif;
}

.my-box2 {

/*background-color: LigthBlue;*/
  color: black;
  padding: 5px;

  width: 500px;
margin-left: auto;
  margin-right: auto;
}

.input-grupo {
margin-left: auto;
  margin-right: auto;
}