.banner {
  width: 100%;
}

.banner img {
  width: 100%;
}

.main {
  width: 100%;
  background: #F4F5F7;
  padding: 100px 0 86px 0;
}

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

.main-content {
  width: 1200px;
  margin: auto;
}

@media screen and (max-width: 768px) {
  .main-content {
    width: 100%;
  }
}

.main-content-item {
  width: 100%;
  background: #ffffff;
  height: 330px;
  margin-bottom: 56px;
  cursor: pointer;
}

@media screen and (max-width: 768px) {
  .main-content-item {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
  }
}

.main-content-item:last-child {
  margin-bottom: 0;
}

.main-content-item-right {
  width: 498px;
  float: left;
  height: 100%;
}

@media screen and (max-width: 768px) {
  .main-content-item-right {
    width: 40%;
  }
}

.main-content-item-right img {
  width: 100%;
  height: 100%;
}

.main-content-item-left {
  width: calc(100% - 498px);
  float: left;
  padding: 50px;
}

@media screen and (max-width: 768px) {
  .main-content-item-left {
    width: 60%;
    padding: 10px;
  }
}

.main-content-item-left h5 {
  font-size: 30px;
  color: #333333;
  margin: 0 0 32px 0;
}

@media screen and (max-width: 768px) {
  .main-content-item-left h5 {
    font-size: 16px;
    display: -webkit-box;
    text-overflow: ellipsis;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin: 0 0 12px 0;
  }
}

.main-content-item-left p {
  font-size: 16px;
  line-height: 26px;
  color: #777777;
}

@media screen and (max-width: 768px) {
  .main-content-item-left p {
    font-size: 14px;
    display: -webkit-box;
    text-overflow: ellipsis;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 20px;
  }
}

.main-page {
  width: 200px;
  max-width: 500px;
  margin: auto;
  display: flex;
  margin-top: 65px;
  justify-content: space-between;
}

@media screen and (max-width: 768px) {
  .main-page {
    margin-top: 20px;
  }
}

.main-page-btn {
  width: 46px;
  height: 46px;
  background: #ffffff;
  box-shadow: 0px 0px 3px 0px rgba(99, 99, 99, 0.28);
  text-align: center;
  line-height: 46px;
  cursor: pointer;
}

.main-page ul li a {
  display: inline-block;
  width: 46px;
  height: 46px;
  background: #ffffff;
  box-shadow: 0px 0px 3px 0px rgba(99, 99, 99, 0.28);
  text-decoration: none;
  line-height: 46px;
  text-align: center;
  color: #000000;
  font-size: 18px;
}

.main-page ul li a.active {
  background: #21C4FF;
  color: #ffffff;
}