.img {
  box-sizing: border-box;
  width: 100%;
  height: 500px;
  background-image: url("../images/case_back.jpg");
  background-position: center;
  background-repeat: no-repeat;
  text-align: center;
  padding-top:95px;  
  overflow: hidden;
}
.img_case_text{
  box-sizing: border-box;
  color: white;
  font-size: 50px;
  margin-top: 75px;
  white-space: nowrap;
}
.case2_wrap{
  width: 1200px;
  /* height: 1000px; */
  /* background-color: #fff; */
  margin:0 auto;
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  justify-content: space-evenly;
  align-items: center;
  padding-top: 70px;
  padding-bottom: 50px;
}
.case2_row{
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
}
.item_wrap{
  border-radius: 10px;
  box-shadow: 1px 1px 17px 4px rgba(156,156,156,0.2);
}
.item_img{
  width: 380px;
  height: 224px;
  background-color: #9e9e9e;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.item_text_case2{
  font-size: 22px;
  line-height: 76px;
  color: #7d7f86;
  /* padding-top: 26px; */
  text-align: center;
  /* font-weight: bold; */
  background-color: #fff;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
}
.case_page{
  font-size: 18px;
  height: 50px;
  text-align: center;
  margin-bottom: 45px;
}
.page_num{
  color: #7d7f86;
  width: 48px;
  height: 40px;
  line-height: 40px;
  background-color: #efeded;
  display: inline-block;
  border:2px solid #d1d1d1;
  cursor: pointer;
}
.page_on{
  background-color: #00254F;
  color: white;
  border:2px solid #00254F;
}
.gsal {
  font-size: 26px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #202020;
  line-height: 29px;
  margin-bottom: 43px;
}

.case_menu {
  position: fixed;
  top:685px;
  left:200px;
  width: 20%;
  /* position: absolute;
  top: 734px;
  left: 386px; */
}

.menu_t {
  height: 60px;
  border-radius: 6px;
  margin-bottom: 29px;
  font-size: 19px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  line-height: 60px;
  padding-left: 43px;
  border: 1px solid #dedede;
  border-radius: 6px;
  color: #9e9e9e;
}

.menu_tt {
  background: #4385f5;
  color: #ffffff;
}

.menu_img {
  /* width: 687px;
  margin-left: 837px;
  margin-top: 127px; */
}

.case_imgbox {
  height: 536px;
  background: #ffffff;
  box-shadow: 4px 8px 6px 5px rgba(61, 62, 56, 0.1);
  border-radius: 9px;
  margin-bottom: 37px;
}

.back {
  width: 687px;
  height: 442px;
}

.yhgl {
  background-image: url("../images/yhxm.png");
}

.mtwz {
  background-image: url("../images/tcxww.png");
}

.gcgl {
  background-image: url("../images/gcgl.png");
}

/* 2 */
.jch {
  background-image: url("../images/jch.png");
}

.ywlc {
  background-image: url("../images/ywlc.png");
}

.yhsp {
  background-image: url("../images/yhsp.png");
}
/* 3 */
.app1 {
  background-image: url("../images/app1.png");
}
.app2 {
  background-image: url("../images/app2.png");
}
.app3 {
  background-image: url("../images/app3.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
/* 4 */
.gc1 {
  background-image: url("../images/gc1.png");
}
.gc2 {
  background-image: url("../images/gc2.png");
}
.gc3 {
  background-image: url("../images/gc3.png");
}
.img_text {
  font-size: 24px;
  font-family: Alibaba PuHuiTi;
  font-weight: 400;
  color: #9e9e9e;
  line-height: 29px;
  line-height: 96px;
  padding-left: 17px;
}