.md-pro-1 {
  position: relative;
  padding-top: 1rem;
  padding-bottom: 0.8rem;
}
.md-pro-1 .layout {
  margin-left: auto;
  margin-right: auto;
  width: 15.6rem;
  max-width: 92%;
}

.pro1-list .li {
  width: calc( 375 / 1560 * 100%);
  margin-right: calc( 20 / 1560 * 100%);
  margin-bottom: 0.2rem;
}
.pro1-list .li:nth-child(4n) {
  margin-right: 0;
}
.pro1-list .dd {
  display: block;
  height: 100%;
  background-color: #fff;
  padding: 0.3rem;
}
.pro1-list .dd:hover .btn {
  background-color: #008a83;
  background-image: url(../images/icon-p12.png);
  transform: rotate(180deg);
}
.pro1-list .dd:hover .title {
  color: #008a83;
}
.pro1-list .img {
  padding-top: 100%;
}
.pro1-list .text {
  margin-top: 0.2rem;
}
.pro1-list .title {
  transition: all 0.5s;
}
.pro1-list .en_title {
  margin-bottom: 0.1rem;
}
.pro1-list .btn {
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background-color: #f7f7f7;
  margin: 0 auto;
  background-image: url(../images/icon-p11.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20% auto;
  transition: all 0.5s;
}
@media screen and (max-width: 900px) {
  .pro1-list {
    justify-content: space-between;
  }
  .pro1-list .li {
    width: 48%;
    margin-right: 0;
    margin-bottom: 4%;
  }
}