.toggleOpen::after {
  transition: all 0.5s;
}

.faqList > li {
  position: relative;
  padding: 0 0 20px 45px;
  border-bottom: 1px solid #e9e9e9;
}
.faqList > li:not(:last-child) {
  margin-bottom: 20px;
}
.faqList > li:nth-child(-n+9) b::before {
  content: "0";
}
.faqList b {
  position: absolute;
  top: 5px;
  left: 0;
  width: 35px;
  height: 35px;
  line-height: 35px;
  border-radius: 50%;
  font-size: 13px;
  color: #fff;
  text-align: center;
  background-color: #6fa8c7;
}
.faqList .classTitle {
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 500;
  color: #6fa8c7;
}
.faqList h3 {
  position: relative;
  padding-right: 25px;
  font-weight: 500;
  font-size: 18px;
  cursor: pointer;
}
@media (max-width: 640px) {
  .faqList h3 {
    font-size: 16px;
  }
}

.toggleOpen {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 16px;
  height: 16px;
  background-color: #20466e;
  cursor: pointer;
}
.toggleOpen::before, .toggleOpen::after {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: 25%;
  width: 50%;
  height: 2px;
  background-color: #fff;
}
.toggleOpen::after {
  transform: rotate(90deg);
}
.toggleOpen.open::after {
  transform: rotate(0);
}

.definition {
  display: none;
  margin-top: 20px;
  padding: 15px;
  border-left: 3px solid #6fa8c7;
  background-color: #f7f7f7;
}
@media (max-width: 640px) {
  .definition {
    margin-left: -40px;
  }
}