html,
body {
  width: 100%;
  height: 100%;
  min-width: 1200px;
}
.Download {
  width: 100%;
  height: 100%;
}
.Download .head {
  position: relative;
  width: 100%;
  height: 325px;
  background: url('../../img/product/Download/head.png') no-repeat center;
  background-size: cover;
}
.Download .head_content {
  width: 1200px;
  margin: 0 auto;
  position: absolute;
  left: 50%;
  top: 0;
  margin-left: -600px;
}
.Download .head_content .text {
  position: absolute;
  left: 56px;
  top: 100px;
  font-size: 50px;
  color: #fff;
  text-align: center;
}
.Download .head_content .img {
  position: absolute;
  right: 20px;
  top: 80px;
  width: 64%;
}
.Download .bx {
  width: 1200px;
  margin: 0 auto;
}
.Download .Download_list {
  padding-bottom: 60px;
}
.Download .Download_list ul {
  margin: 0 -6px;
  margin-top: 190px;
  font-size: 0;
}
.Download .Download_list li {
  width: 229px;
  height: 229px;
  margin: 0 6px;
  display: inline-block;
  vertical-align: top;
}
.Download .Download_list li .download-item {
  border: 1px solid #dfdfdf;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transition: all 1s;
  position: relative;
  text-align: center;
  transition: all 1s;
  display: block;
  height: 100%;
}
.Download .Download_list li:hover .download-item {
  transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
  -o-transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
}
.Download .Download_list li:hover .back {
  z-index: 2;
}
.Download .Download_list li .face {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #fff;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  z-index: 1;
}
.Download .Download_list li .face p {
  font-size: 20px;
  color: #999999;
  margin-top: 10px;
}
.Download .Download_list li .back {
  /*让它成为背面，开始只显示正面*/
  transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
  -o-transform: rotateY(180deg);
  -webkit-transform: rotateY(180deg);
  background-color: #f5f5f4;
  width: 100%;
  height: 100%;
  position: absolute;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
}
.Download .Download_list li .back .ewm {
  width: 135px;
  height: 135px;
  background: #999;
  margin-top: 21px;
}
.Download .Download_list li .back .ewm img {
  width: 100%;
}
.Download .Download_list li .back p {
  margin-top: 14px;
  font-size: 16px;
  line-height: 22px;
  color: #363434;
  letter-spacing: 0.5px;
}
.Download .Download_list li .last_back .ewm {
  background: none;
}