/* 绿康 */
.pm-book {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: space-between;
  width: 80%;
  margin: auto;
}
.pm-book-item {
  width: 15%;
}
.pm-book-item img {
  max-width: 100%;
  transition: all 1.5s; //设置动画执行的时间为0.6s
}
.pm-book-item img:hover{
  transform: scale(1.3);
}

.pm-advantages-item {
  width: 16%;
}
@media screen and (max-width: 768px) {
  .pm-top {
    padding-top: 2rem;
  }
  .pm-top-info,
  .pm-top-pic,
  .pm-advantages-item,
  .pm-use-item {
    width: 100%;
  }
  .pm-book-item {
    width: 33%;
  }
  .pm-book-item img {
    max-width: 100%;
  }
}