.home {
  background-color: #ffc107;
  color: white;
  padding-top: 25px;
}

.caixa {
  padding: 60px 0;
  border: 1px solid #e5e5e5;
}

@media only screen and (max-width: 428px) {
  form {
    width: 325px;
    margin: 0 auto;
  }

  .rede-social {
    text-align: center;
  }

  h1.display-4 {
    font-size: 40px;
  }

  form {
    width: 280px;
  }
}

@media only screen and (max-width: 325px) {
  form {
    width: 285px;
  }
}