.login-title {
  text-align: center;
  font-weight: 200;
}

.login-button {
  width: 100%;
}

@media ( max-width : 767px) {
  .login-card {
    width: 100%;
    margin: 0;
  }
}

@media ( min-width : 767px) {
  .login-card {
    position: relative;
    top: 100px;
    width: 350px;
    margin: auto;
  }
}