.main-footer {
  width: 100%;
  background: #ad2b17;
}

.main-footer .footer-container {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  -ms-flex-pack: center;
  justify-content: center;
  padding: 0 0 20px 0;
  color: white;
  min-height: 200px;
}

/* 为IE 10添加margin替代gap */
.footer-container > * {
  margin-bottom: 12px;
}

.footer-container > *:last-child {
  margin-bottom: 0;
}

.footer-container .contact-info {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

/* 为IE 10添加margin替代gap */
.contact-info > * {
  margin-right: 50px;
}

.contact-info > *:last-child {
  margin-right: 0;
}

/* !!!!!!!!! 响应式 !!!!!!!!! */
@media screen and (max-width: 768px) {
  .main-footer .footer-container {
    padding: 20px 20px 30px 20px;
  }

  /* 为IE 10添加margin替代gap */
  .footer-container > * {
    margin-bottom: 20px;
  }

  .footer-container .contact-info {
    -ms-flex-direction: column;
    flex-direction: column;
  }

  /* 为IE 10添加margin替代gap */
  .contact-info > * {
    margin-right: 0;
    margin-bottom: 20px;
  }

  .contact-info > *:last-child {
    margin-bottom: 0;
  }
}