.ot_dqwz_dd {
  width: 100%;
  margin: 30px 0 50px 0;
  height: 54px;
  background-color: #d6e7f3;
  display: flex;
  justify-content: center;
  align-items: center;
}
.ot_dqwz_dd p {
  font-size: 16px;
}
.ot_dqwz_dd a:last-child {
  color: #337cbf;
}
.book_container {
  width: 100%;
  height: auto;
}
.book_container .w {
  overflow: visible;
}
.book_list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}
.book_bg {
  margin-right: 80px;
  margin-bottom: 60px;
  position: relative;
  width: 300px;
  height: 404px;
  overflow: hidden;
}
.book_bg:hover {
  box-shadow: rgba(0, 0, 0, 0.1) 7px 8px 7px;
  transform: translateY(-4px);
}
.book_list .book_bg:nth-of-type(4n) {
  margin: 0;
}
.book_name {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  bottom: 0;
  width: 300px;
  height: 52px;
  background-color: #0068b7;
}
.book_name p {
  color: #f1f5ff;
}