.invitation {
  text-align: center;
}

.invitation fieldset {
  width: 35%;
  font-size: 0.875rem;
  border: 1px solid grey;
  border-radius: 1.5rem;
  margin-left: auto;
  margin-right: auto;
  padding: 2em;
}

.invitation label {
  display: block;
  font-size: 1rem;
  color: black;
}

.invitation input[type=email] {
  display: inline-block;
  color: black;
  font-size: 1.5rem;
  background-color: #faffbd;
  margin-bottom: 10px;
  width: 400px;
}

.invitation input {
  margin-top: 10px;
}

@media screen and (max-width: 26.875rem) {
  .invitation fieldset {
    width: 100%;
    padding: 2em;
    font-size: 0.875rem;
    border: none;
  }

  .invitation input[type=email] {
    width: 100%;
  }
}