@media (min-width: 320px) and (max-width: 768px) {
  .left {
    display: block !important;
  }
}
@media (min-width: 768px) and (max-width: 1200px) {
  .left {
    display: block !important;
  }
}
@media (min-width: 1200px) {
  .left ul li a {
    display: flex;
  }
}
.pcContent {
  margin-top: 20px;
}