.banner_top a {
  display: block;
  text-align: center;
  height: 150px;
  margin: 0 auto 10px;
}
.banner_top a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 0 0;
}
.banner_fix {
  position: fixed;
  bottom: 0;
  z-index: 10;
  transform: translate(-50%, 0%);
  left: 50%;
}
.banner_fix a {
  display: block;
  width: 970px;
  height: 90px;
  overflow: hidden;
  margin-bottom: 2px;
}
.banner_fix a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 0 0;
}
@media (max-width: 960px) {
  .banner_fix {
    display: none;
  }
}