.zsyx-top-banner {
  height: 600px;
  background: url(https://lstyty.oss-cn-hangzhou.aliyuncs.com/51tyty/officialWebsite/productService/zsyx/img_admissions_banner.png)
    no-repeat center center;
  background-size: cover;
}
.zsyx-top-banner .free-use-btn {
  width: 222px;
  height: 70px;
  line-height: 70px;
  font-size: 20px;
  border-radius: 36px;
  margin-left: 0;
  margin-top: 60px;
}
.index-free-box {
  overflow: hidden;
}
.banner-title {
  /* width: 320px; */
  height: 112px;
  font-size: 80px;
  color: #ffffff;
  line-height: 112px;
  margin-top: 160px;
  font-weight: 600;
  margin-bottom: 30px;
}
.banner-info {
  height: 33px;
  font-size: 24px;
  color: #ffffff;
  line-height: 33px;
  letter-spacing: 4px;
}
.zsyx-top-banner .shadow-btn {
  width: 222px;
  height: 70px;
  background: #fff;
  opacity: 0.2;
  border-radius: 36px;
  position: absolute;
  top: 9px;
  left: 10px;
}

.zsyx-box li:nth-child(odd){
  background: #fff;
}
.zsyx-box li:nth-child(even){
  background: #F9FAFF;
}


.flex-box {
  width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
}
.img1 {
  margin: 110px 0;
  width: 828px;
  height: 474px;
}
.img2 {
  margin: 102px 0 94px 0;
  width: 762px;
  height: 629px;
}
.img3 {
  margin: 128px 0 96px 0;
  width: 734px;
  height: 583px;
}
.img4 {
  margin: 185px 0 126px 0;
  width: 781px;
  height: 469px;
}
.img5 {
  margin: 109px 0 118px 0;
  width: 711px;
  height: 585px;
}
.special-margin1 {
  margin-left: -28px;
}
.special-margin2 {
  margin-left: -15px;
}
.special-margin3 {
  padding-top: 107px;
}
.item-title { 
  color: #333333;
  font-weight: 600;
  font-size: 36px;
}
.item-content {
  color: #222222;
  font-size: 26px;
  margin: 25px 0 30px 0;
}
.videoBtn {
  width: 186px;
  height: 48px;
  font-size: 16px;
  line-height: 48px;
  border: 1px solid #3097FF;
  border-radius: 24px;
  color: #1890FF;
  text-align: center;
  cursor: pointer;
  margin: 0 auto;
}
.right-video {
  float: right;
}
.left-video {
  float: left;
}
.last-box {
  text-align: center;
}
.last-list {
  padding: 90px 0 96px 0;
  display: flex;
  justify-content: center;
}
.last-item {
  background: url(../images/zsyx/bg1.png) no-repeat center center;
  background-size: 100% 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 400px;
  height: 185px;
}
.last-item-title {
  margin-top: 16px;
  color: #222222;
  font-size: 24px;
}
.last-item img {
  width: 56px;
  height: 56px;
}
@media screen and (max-width: 1440px) {
  .zsyx-top-banner {
    height: 450px;
  }
  .zsyx-top-banner .free-use-btn {
    width: 166px;
    height: 52px;
    line-height: 52px;
    font-size: 15px;
    margin-top: 44px;
  }
  .free-use-btn img {
    width: 12px;
    height: 13px;
    margin-top: -2px;
  }
  .banner-title {
    /* width: 240px; */
    height: 84px;
    font-size: 60px;
    color: #ffffff;
    line-height: 84px;
    margin-bottom: 23px;
    font-weight: 600;
    margin-top: 120px;
  }
  .banner-info {
    height: 25px;
    font-size: 18px;
    color: #ffffff;
    line-height: 25px;
    letter-spacing: 3px;
  }
  .zsyx-top-banner .shadow-btn {
    width: 166px;
    height: 52px;
    line-height: 52px;
    top: 6px;
    left: 7px;
  }


  .flex-box {
    width: 900px;
  }
  .img1 {
    margin: 82px 0;
    width: 621px;
    height: 355px;
  }
  .img2 {
    margin: 107px 0;
    width: 594px;
    height: 404px;
  }
  .img3 {
    margin: 97px 0 71px 0;
    width: 550px;
    height: 437px;
  }
  .img4 {
    margin: 152px 0 97px 0;
    width: 607px;
    height: 337px;
  }
  .img5 {
    margin: 82px 0 89px 0;
    width: 569px;
    height: 438px;
  }
  .special-margin1 {
    margin-left: -51px;
  }
  .special-margin2 {
    margin-left: -15px;
  }
  .special-margin3 {
    padding-top: 77px;
  }
  .special-margin4 {
    margin-right: -54px;
  }
  .special-margin5 {
    margin-left: -12px;
  }
  .item-title { 
    font-size: 30px;
  }
  .item-content {
    font-size: 20px;
    margin: 22px 0;
  }
  .videoBtn {
    width: 140px;
    height: 36px;
    font-size: 14px;
    line-height: 36px;
    border-radius: 18px;
  }

  .last-list {
    padding: 68px 0 74px 0;
  }
  .last-item {
    background: url(../images/zsyx/bg1.png) no-repeat center center;
    background-size: 100% 100%;
    width: 300px;
    height: 138px;
  }
  .last-item-title {
    margin-top: 9px;
    font-size: 18px;
  }
  .last-item img {
    width: 42px;
    height: 42px;
  }
}
