body {
  background-image: url("background.jpg");
  background-size:cover;
  background-repeat: no-repeat;
  text-align: center;
  padding-top: 250px;
}

.card {
  background: none;
}

.card-body {
  margin-left: 20%;
  margin-right: 20%;
  font-size: 20px;
  font-family: 'Roboto', sans-serif, arial;
  color: darkblue;
}

.textarea-style {
  margin-left: 30%;
  margin-right: 30%;
}

.offset-style{
  margin-left: 30%;
  margin-right: 30%;
}

.btn-style {
  margin-left: 30%;
  margin-right: 30%;
  font-size: 20px;
  font-family: 'Roboto', sans-serif, arial;
  color: darkblue;
}