.navDiv{
  width: 100%;
  position: fixed;
  bottom: 0;
  display: flex;
  background-color: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: space-around;
  /* padding: 0.5rem 0; */
  height: 2.5rem;
  z-index: 10000;
}
.navDiv > img{
  width: 1.6rem;
}
/* 缩略图 */
.thumbnailDiv{
  width: 100%;
  position: fixed;
  top: 0;
  background-color: rgba(0,0,0,0.9);
  z-index: 9999;
  padding-top: 1rem;
  height: calc(100% -  2.5rem - 1rem);
  /* overflow: hidden; */
  display: none;
}
.thumbnailImg{
  display: flex;
  flex-flow: wrap;
  align-items: center;
  height: 100%;
  overflow-y: scroll;
}
.thumbnailImg > div{
  width: 25%;
  color: #fff;
  margin-left: calc((100% - (25% * 3)) / 4);
  margin-top: 1rem;
}
.thumbnailImg > div > div{
  width: 100%;
  text-align: center;
}
.thumbnailImg > div > img{
  width: 100%;
}
.thumbnailImg > div:last-child{
  width: 100%;
  margin-left: 0;
  margin-top: 0;
}
.thumbnailImg > div:last-child > img{
  width: 3rem;
  margin: 1rem auto;
}
/* .thumbnailCloseBtn{
  width: 100%; */
  /* margin: 1rem auto; */
  /* position: absolute; */
  /* bottom: 1rem; */
  /* left: calc(50% - 1rem); */
/* } */
/* .thumbnailCloseBtn > img{
  width: 2rem;
  margin: 1rem auto;
} */
/* 目录 */
.catalogDiv{
  width: 80%;
  position: fixed;
  top: 0;
  background-color: rgba(0,0,0,0.7);
  z-index: 9999;
  /* padding-top: 1rem; */
  height: calc(100% -  2.5rem);
  /* overflow: hidden; */
  display: none;
  color: #fff;
}
.catalogDivTitle{
  width: 100%;
  padding-top: 2rem;
  text-align: center;
  border-bottom: 1px solid #fff;
  height: 2rem;
}
.catalogDivTitle > div:nth-child(1){font-weight: 800;border-bottom: 2px solid #fcebaf;width: 3rem;margin: 0 auto;height: 100%;box-sizing: border-box;font-size: 1.2rem;}
.singleCatalog{
  width: 100%;
  margin-top: 1rem;
}
.firstCatalog{
  width: 90%;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.firstCatalog > div:nth-child(2){
  /* width: 100%; */
  margin-left: 0.5rem;
}
.firstCatalog > img:nth-child(1){
  width: 1rem;
}
.secondCatalog{
  width: calc(90% - 2rem);
  display: none;
  /* margin: 0 auto; */
  margin-top: 0.5rem;
  border-bottom: 1px dashed #fcebaf;
  box-sizing: border-box;
  padding-bottom: 0.5rem;
  margin-left: 3rem;
}
/* 进度 */
.progressDiv{
  width: 100%;
  position: fixed;
  bottom: 2.5rem;
  background-color: rgba(0,0,0,0.7);
  z-index: 9999;
  /* padding-top: 1rem; */
  /* height: calc(100% -  2.5rem); */
  /* overflow: hidden; */
  display: none;
  justify-content: space-evenly;
  align-items: center;
  padding: 0.5rem 0;
}
.progressDiv > img{
  width: 2rem;
}
.progressDiv > div{
  width: 50%;
  border-radius: 16px;
  padding: 0.1rem 0;
  background-color: #fff;
  text-align: center;
}
/* 分享 */
.shareDiv{
  width:100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background-color: rgba(0,0,0,0.9);
  z-index: 9999;
  display: none;
  color: #fff;
}
.shareDiv >img{
  width: 5rem;
  margin-left: calc(100% - 6rem);
}
.shareDiv >div{
  width: 80%;
  /* border: 3px solid; */
  border-radius: 50%;
  height: 8rem;
  /* margin: 0 auto; */
  margin-top: -1rem;
  margin-left: 9rem;
}
.shareText{
  width: 80%;
  margin: 0 auto;
  margin-top: 1rem;
  text-align: center;
  /* margin-left: 4rem; */
}
.shareCloseBtn{
  width: 5rem;
  margin: 0 auto;
  background-color: #fff;
  color: #000;
  text-align: center;
  padding: 0.25rem 0;
  border-radius: 4px;
  margin-top: 0.5rem;
  display: none;
}
/* 放大 */
.bigImgDiv{
  z-index: 9999;
  display: none;
  width: 100%;
  height: 100%;
  position: fixed;
  /* background-color: #000; */
  overflow: scroll;
}
.bigImgDiv > img{
  width:100%;
}
.bigImgDiv::-webkit-scrollbar { 
  width: 0 !important 
}
/* .shade{
  display: none;
} */
.catalogDivContainer{
  height: calc(100% - 4rem);
  overflow-y: scroll;
}
.catalogDivContainer > div:last-child{
  margin-bottom: 1rem;
}
.flipbook-viewport{
  margin:0 auto;
}
.firstImg{
  /* position: fixed; */
  margin:0 auto;
}