.external {
  width: 1200px;
  margin: 0 auto;
}
.external .inside .background-img {
  position: relative;
  width: 210px;
  height: 130px;
}
.external .inside .background-img .bj-img {
  width: 210px;
  margin: 13px;
  height: 130px;
}
.external .inside .background-img .img-text {
  position: absolute;
  left: 0;
  top: 0px;
  margin: 13px;
  width: 210px;
  height: 0px;
  background-color: #bb0007;
  opacity: 0.8;
  text-align: center;
  transition: height 0.2s;
  color: #fff;
}
.external .inside .background-img .img-text p {
  display: none;
  padding-top: 50px;
}
.external .inside .background-img:hover .img-text {
  width: 210px;
  height: 130px;
}
.external .inside .background-img:hover .img-text p {
  display: block;
}
@media only screen and (max-width: 900px) {
  .bj-img {
    height: auto!important;
  }
}