.banner {
  width: 100%;
  position: relative;
}

.banner img {
  width: 100%;
}

.banner p {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffffff;
  font-size: 45px;
  text-align: center;
  width: 100%;
}

@media screen and (max-width: 768px) {
  .banner p {
    font-size: 16px;
  }
}

.introduce {
  width: 100%;
  padding: 75px 0;
  background-color: #ffffff;
  text-align: center;
}

@media screen and (max-width: 768px) {
  .introduce {
    padding: 20px 0;
  }
}

.introduce p {
  color: #808080;
  font-size: 16px;
  line-height: 26px;
  width: 70%;
  margin: auto;
  margin-top: 50px;
  max-width: 910px;
}

@media screen and (max-width: 768px) {
  .introduce p {
    font-size: 14px;
    width: 90%;
    margin-top: 14px;
  }
}

.function {
  width: 100%;
  background-color: #F5F5F7;
  padding: 75px 0;
}

@media screen and (max-width: 768px) {
  .function {
    padding: 20px 0;
  }
}

.function-list {
  width: 990px;
  margin: auto;
  margin-top: 58px;
  display: flex;
  justify-content: space-between;
}

@media screen and (max-width: 768px) {
  .function-list {
    width: calc(100% - 32px);
    margin-top: 30px;
    flex-wrap: wrap;
  }
}

.function-list-item {
  text-align: center;
}

@media screen and (max-width: 768px) {
  .function-list-item {
    width: calc(100% / 3);
    margin-bottom: 20px;
  }
}

.function-list-item img {
  width: 36px;
  height: 37px;
}

.function-list-item p {
  margin-top: 12px;
  color: #333333;
  font-size: 14px;
}

@media screen and (max-width: 768px) {
  .function-list-item p {
    font-size: 12px;
  }
}

.business {
  width: 100%;
  padding: 75px 0;
}

@media screen and (max-width: 768px) {
  .business {
    padding: 20px 0;
  }
}

.business-content {
  width: 882px;
  margin: auto;
  margin-top: 58px;
}

@media screen and (max-width: 768px) {
  .business-content {
    width: 90%;
    margin-top: 30px;
  }
}

.business-content img {
  width: 100%;
}

.advantage {
  width: 100%;
  background-color: #F5F5F7;
  padding: 75px 0;
}

@media screen and (max-width: 768px) {
  .advantage {
    padding: 20px 0;
  }
}

.advantage-list {
  width: 821px;
  margin: auto;
  margin-top: 58px;
}

@media screen and (max-width: 768px) {
  .advantage-list {
    width: calc(100% - 32px);
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
  }
}

.advantage-list-item {
  float: left;
  text-align: center;
  margin-right: 163px;
}

@media screen and (max-width: 768px) {
  .advantage-list-item {
    float: none;
    margin-right: 0;
  }
}

.advantage-list-item:last-child {
  margin-right: 0px;
}

.advantage-list-item img {
  width: 83px;
  height: 83px;
}

@media screen and (max-width: 768px) {
  .advantage-list-item img {
    width: 50px;
    height: 50px;
  }
}

.advantage-list-item p {
  color: #333333;
  font-size: 16px;
  margin-top: 24px;
}

@media screen and (max-width: 768px) {
  .advantage-list-item p {
    font-size: 14px;
  }
}

.rectangle h2 {
  font-size: 30px;
  color: #333333;
  text-align: center;
}

@media screen and (max-width: 768px) {
  .rectangle h2 {
    font-size: 18px;
    font-weight: 400;
  }
}