.h_1200 {
  width: 96%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 0;
}
.h_1200 .h_banner {
  display: flex;
  align-items: center;
}
.h_1200 .h_banner .h_desc {
  width: 20%;
  font-size: 20px;
  font-weight: 600;
}
.h_1200 .h_banner .h_video {
  width: 80%;
  overflow: hidden;
  position: relative;
}
.h_1200 .h_banner .h_video iframe {
  width: 100%;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
.h_1200 .h_box2 {
  margin-top: 40px;
}
.h_1200 .h_box2 .h_title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 14px;
}
.h_1200 .h_box2 .h_videoList {
  display: flex;
  column-gap: 2%;
  row-gap: 40px;
  flex-wrap: wrap;
}
.h_1200 .h_box2 .h_videoList .h_box {
  width: 49%;
}
.h_1200 .h_box2 .h_videoList .h_box .h_video {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.h_1200 .h_box2 .h_videoList .h_box .h_video iframe {
  width: 100%;
}
.h_1200 .h_box2 .h_videoList .h_box .h_video2 iframe {
  width: 70%;
}
.h_1200 .h_box2 .h_videoList .h_box .h_desc {
  font-size: 14px;
  margin: 8px auto 0;
  width: 80%;
  text-align: center;
}
.h_1200 .h_box2.h_box3 .h_videoList .h_box {
  width: 32%;
  text-align: center;
}
@media screen and (max-width: 767px) {
  .h_1200 .h_box2.h_box3 .h_videoList .h_box {
    width: 49%;
  }
}
@media screen and (max-width: 480px) {
    
.h_1200 .h_banner .h_desc{
    margin-bottom: 14px;
}
  .h_1200 .h_banner {
    flex-wrap: wrap;
  }
  .h_1200 .h_banner .h_video,
  .h_1200 .h_banner .h_desc,
  .h_1200 .h_box2 .h_videoList .h_box,
  .h_1200 .h_box2.h_box3 .h_videoList .h_box {
    width: 100%;
  }
}