website/style/about.css

.main-about {
  z-index: 8;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
}
.main-about-mask-1 {
  background: linear-gradient(180deg, rgba(6, 119, 161, .3) 0%, rgba(0, 0, 0, .7) 100%);
}
.main-about-mask-2 {
  background: linear-gradient(180deg, rgba(197, 81, 42, .3) 0%, rgba(0, 0, 0, .7) 100%);
}
.main-about-mask-3 {
  background: linear-gradient(180deg, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .7) 100%);
}
.main-about {
  color: white;
}
.main-about .container {
  /* height: auto; */
}
.main-about h2 {
  position: relative;
  padding: 0 0 1rem .5rem;
  color: #ffc000;
}
.main-about h2::after {
  content: '';
  width: 0px;
  height: 0px;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 16px solid #ffc000;
  position: absolute;
  top: .6rem;
  left: -1rem;
}
.main-about .nav-img {
  z-index: 8;
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 6rem;
  opacity: .6;
}
.main-about img {
  display: block;
  width: 100%;
}
.main-about p {
  padding: 0 0 0 .5rem;
  line-height: 1.5rem;
  font-size: 1rem;
  opacity: .9;
}

.content-1 {
  position: absolute;
  top: 50%;
  left: 1rem;
  right: 1rem;
  transform: translateY(-50%);
}

/*分会*/
.city-items {
  z-index: 10;
  position: absolute;
  top: 50%;
  left: 9rem;
  right: 1rem;
  transform: translateY(-50%);
}
.city-items > div {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  font-size: 1.2rem;
}
.city-items h5 {
  width: 100%;
  border-bottom: 1px solid #ffc000;
  padding-bottom: .5rem;
  font-size: 1.2rem;
  line-height: 1.5rem;
  font-weight: bold;
  color: #ffc000;
}
.city-items label {
  width: 100%;
  color: #ffc000;
  font-weight: bold;
  border-bottom: 1px solid rgba(255, 255, 255, .7);
  padding: .3rem 0;
}
.city-items span {
  position: relative;
  width: 25%;
  padding: .1rem 0;
}

/*使命*/
.sm {
  position: absolute;
  top: 50%;
  left: 9rem;
  right: 1rem;
  transform: translateY(-50%);
  font-size: 1.1rem;
}
.sm h3 {
  padding-top: 1.5rem;
  font-size: 1.2rem;
  color: #ffc000;
}
.sm p {
  margin: 0;
  padding: .2rem 0;
  font-size: 1rem;
  line-height: 1.4rem;
}

.main-about img.map {
  z-index: 1;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 70%;
  opacity: .3;
  transform: translate3d(-50%, -50%, 0);
}



@media (max-width: 767.98px) {
  .main-about img.map{
    width: 100%;
  }
  .sm,.city-items {
    left: 8rem;
  }
  .city-items span {
    width: 50%;
  }
}