.l_biaoyu {
  bottom: 1.33333333rem;
  left: 50%;
  transform: translateX(-50%);
}
.tangle {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-width: 0 0.66666667rem 0.6rem;
  border-style: solid;
  border-color: transparent transparent rgba(245, 245, 245, 0.15);
  display: none;
}
.active .tangle {
  display: block;
}
.bdblue1 {
  border-bottom: 1px solid #dfe8f3;
}
.bdblue2 {
  border-bottom: 1px solid #5d74e2;
}
.pt55 {
  padding-top: 55%;
}
.pt25 {
  padding-top: 25%;
}
.mt-100 {
  margin-top: -2rem;
}