.h3 {
  font-size: 40px;
  color: var(--color);
}
.about-title {
  font-size: 48px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
}
.about-introduction {
  margin-top: -4px;
  background-color: var(--bgc);
  padding: 80px 0;
}
.about-introduction img {
  width: 828px;
  height: 507px;
  margin-left: 83px;
}
.about-introduction p {
  font-size: 18px;
  color: var(--color);
  margin-top: 42px;
  line-height: 36px;
}
.about-introduction .about-introduction_left img {
  position: absolute;
  bottom: 0;
  width: 100%;
  left: 0;
  height: auto;
  margin: 0;
  z-index: 0;
}
.about-make-speech {
  margin: 80px 0;
}
.about-make-speech img {
  width: 536px;
  height: 515px;
  margin-right: 266px;
}
.about-make-speech h4 {
  margin-bottom: 40px;
}
.about-make-speech p {
  font-size: 20px;
  
  line-height: 36px;
}
.about-make-speech .flex_column {
  justify-content: space-between;
}
.about-make-speech .flex_column img {
  width: 136px;
  height: 56px;
}
.about-expert-team {
  background-color: var(--bgc);
  padding: 80px 0;
}
.about-expert-team .about-expert-team_item {
  margin-top: 40px;
  width: calc(100% / 3);
  transition: all 0.3s;
}
.about-expert-team .about-expert-team_item:hover {
  transform: scale(1.1);
}
.about-expert-team .about-expert-team_item img {
  width: 220px;
  height: 260px;
  margin-right: 30px;
}
.about-expert-team .about-expert-team_item h4 {
  color: var(--active);
  font-size: 30px;
  margin-bottom: 30px;
}
.about-expert-team .about-expert-team_item p {
  color: var(--color);
  line-height: 28px;
  font-size: 18px;
}
.about-expert-team .about-expert-team_item p:not(:first-child) {
  margin-top: 12px;
}
.about-expert-team .about-expert-team_item div {
  padding-right: 30px;
}