#box-container {
  flex: 1 1 100%;
  margin-top: 10px;
  font-size: 12px;
}

@media (min-width: 768px) {
  #box-container {
    font-size: 18px;
  }
}

.campaignmonitor-subscribe.ajax-changed input[type="email"] {
  border: 3px solid #e83e3e !important;
}

.campaignmonitor-subscribe.ajax-changed #box-container {
  color: #e83e3e;
}

#campaignmonitor-subscribe label {
  display: none;
}