.fb-block1 .background{
  height: 360px;
  padding-top: 120px;
}
.fb-block1 .title{
  font-size: 48px;
  color: #FFFFFF;
  line-height: 72px;
  font-weight: normal;
}
.fb-block1 .sub-title{
  font-size: 24px;
  color: #FFFFFF;
  line-height: 36px;
}
.fb-block1 .fb-btn{
  margin: 0 auto;
  margin-top: 20px;
}

.fb-block2 .content{
  display: flex;
  justify-content: space-around;
}
.fb-block2 .content .item{
  display: flex;
  flex-direction:column;
  align-items: center;
  padding: 150px 0 120px;
}
.fb-block2 .content .item img{
  width: 60px;
  height: 60px;
  margin-bottom: 24px;
}
.fb-block2 .content .item .item-title{
  margin-bottom: 20px;
  font-size: 24px;
  font-weight: 600;
  color: #333333;
  line-height: 36px;
}
.fb-block2 .content .item .item-des{
  font-size: 14px;
  font-weight: 400;
  color: #888888;
  line-height: 20px;
  text-align: center;
  max-width: 400px;
}
.fb-block3 .background{
  height: 480px;
}
.fb-block3-wrap{
  margin-top: -160px;
}
.fb-block3 .content{
  display: flex;
  flex-direction: column;
  background: white;
}
.fb-block3 .head{
  display: flex;
  flex-direction: column;
  align-items:center;
  height:auto;
  padding-top: 60px;
}
.fb-block3 .head .title{
  font-size: 36px;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.85);
  line-height: 54px;
  margin-bottom: 60px;
}
.fb-block3 .head img{
  width: 90px;
  height: 90px;
  margin-bottom: 20px;
}
.fb-block3 .detail{
  display: flex;
  justify-content:space-between;
  padding: 30px;
  background: rgba(239,243,246,0.3);
  margin: 0 70px;

}
.fb-block3 .detail img{
  width: 60px;
  height: 60px;
}
.fb-block3 .detail .item-title{
  font-size: 24px;
  font-weight: 600;
  color: #333333;
  line-height: 36px;
  margin-bottom: 16px;
  margin-top: 16px;
}
.fb-block3 .detail .item-des{
  max-width: 240px;
  font-size: 14px;
  font-weight: 400;
  color: #888888;
  line-height: 20px;
}

.fb-block4 .head{
  height: auto;
}
.fb-block4 .sub-title{
  color: #666666;
}

.fb-block4 .content{
  display: flex;
  justify-content: space-around;
}
.fb-block4 .content .item{
  display: flex;
  flex-direction:column;
  justify-content: space-between;
  align-items: center;
  padding: 90px 0 120px;
}
.fb-block4 .content .item img{
  width: 90px;
  height: 90px;
  margin-bottom: 24px;
}
.fb-block4 .content .item .item-title{
  margin-bottom: 20px;
  font-size: 24px;
  font-weight: 600;
  color: #333333;
  line-height: 36px;
}
.fb-block4 .content .item .item-des{
  font-size: 14px;
  font-weight: 400;
  color: #888888;
  line-height: 20px;
  text-align: center;
  max-width: 252px;
}

@media screen and (min-width: 768px) and (max-width: 1200px){


}

@media screen and (min-width: 1200px){


}

@media screen and (min-width: 1440px){
  .fb-block3 .content{
    display: flex;
    flex-direction: row;
    padding: 90px 70px 30px;
  }
  .fb-block3 .content .head{
    margin-right: 40px;
    align-items: flex-start;
  }
  .fb-block3 .content .detail{
    flex: 1;
  }
  .fb-block3 .detail .item-des{
    width: 220px;
  }
  .fb-block3 .detail{
    margin: 0;
  }
}

@media screen and (min-width: 1680px){

}

@media(max-width: 768px){
  .fb-block1 .background{
    height: 420px;
  }
  .fb-block1 .title {
    font-size: 32px;
    line-height: 48px;

  }
  .title-m2{
    margin-bottom: 12px;
  }
  .fb-block1 .sub-title {
    font-size: 16px;
    line-height: 24px;
  }
  .fb-block2{
    display: block;
  }
  .fb-block2 .content{
    flex-direction: column;
    padding: 30px 0;
  }
  .fb-block2 .content .item{
    padding: 30px 0;
  }
  .fb-block3 .content{
    display: flex;
    flex-direction: column;
    padding: 0;
  }
  .fb-block3 .content .head{
    align-items: flex-start;
    padding-left: 30px;
  }
  .fb-block3 .head .title{
    margin-bottom: 0;
  }
  .fb-block3 .content .detail{
    flex: 1;
  }
  .fb-block3 .detail .item-des{
    width: 220px;
  }
  .fb-block3 .detail .item1{
    margin-bottom: 28px;
  }
  .fb-block3 .detail .item2{
    margin-bottom: 28px;
  }
  .fb-block3 .detail{
    margin: 0;
    flex-direction: column;
  }
  .fb-block4 .mtb{
    margin-bottom: 8px;
  }
  .fb-block4 .content{
    flex-direction: column;
    padding: 30px 0;
  }
  .fb-block4 .content .item{

    padding: 0 0 32px;
  }
}