.zsyx-top-banner {
  height: 600px;
  background: url('../images/zzfw/zzfw_bg.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;
}
.teach-two {
  width: 1200px;
  margin: 0 auto;
  display: flex;
  padding: 60px 0 109px 0;
}

.img1 {
  width: 780px;
  height: 531px;
  margin-right: 60px;
}
.img2 {
  width: 730px;
  height: 602px;
  margin-left: 110px;
}
.img3 {
  margin: 114px 0;
  width: 720px;
  height: 492px;
}
.img4 {
  margin: 64px 0;
  width: 674px;
  height: 674px;
}
.img5 {
  margin: 123px 0;
  width: 721px;
  height: 474px;
}
.img6 {
  margin: 138px 0;
  width: 720px;
  height: 526px;
}

.content-box li{
  width: 360px;
  box-sizing: border-box;
  margin-bottom: 17px;
  display: flex;
  padding: 13px 19px 13px 34px;
}
.content-box li img {
  width: 40px;
  height: 40px;
  margin-right: 15px;
}
.teach-two-title {
  font-weight: 500;
  color: #222222;
  font-size: 22px;
}
.teach-two-content {
  margin-top: 10px;
  color: #777777;
  font-weight: 400;
  font-size: 14px;
}

.item-title { 
  color: #333333;
  font-weight: 600;
  font-size: 36px;
}
.item-content {
  color: #222222;
  font-size: 26px;
  margin: 16px 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;
}
.specialBtn {
  margin-left: 34px;
}

@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;
  }

  .videoBtn {
    width: 140px;
    height: 36px;
    font-size: 14px;
    line-height: 36px;
    border-radius: 18px;
  }


  .flex-box {
    width: 900px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
  }
  .teach-two {
    width: 900px;
    margin: 0 auto;
    display: flex;
    padding: 40px 0 90px 0;
  }
  
  .img1 {
    width: 534px;
    height: 363px;
    margin-right: 50px;
  }
  .img2 {
    width: 548px;
    height: 452px;
    margin-left: 37px;
  }
  .img3 {
    margin: 86px 0;
    width: 540px;
    height: 369px;
  }
  .img4 {
    margin: 48px 0;
    width: 506px;
    height: 506px;
  }
  .img5 {
    margin: 93px 0;
    width: 541px;
    height: 356px;
  }
  .img6 {
    margin: 103px 0;
    width: 540px;
    height: 395px;
  }
  
  .content-box li{
    width: 316px;
    box-sizing: border-box;
    margin-bottom: 8px;
    display: flex;
    padding: 0px 5px 0px 24px;
  }
  .content-box li img {
    width: 30px;
    height: 30px;
    margin-right: 13px;
  }
  .teach-two-title {
    font-size: 20px;
  }
  .teach-two-content {
    margin-top: 4px;
    font-size: 14px;
  }
  
  .item-title { 
    font-size: 30px;
  }
  .item-content {
    font-size: 14px;
    margin: 21px 0 20px 0;
  }

  .specialBtn {
    margin-left: 24px;
  }
}