body {
  background-color: #f4f7ff;
}

.content {
  padding-top: 126px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.banner {
  width: 1200px;
  height: 456px;
  margin: 0 auto;
}

.banner img {
  width: 100%;
  height: 100%;
}

.content_list {
  margin: 0 auto;
  margin-top: 68px;
  margin-bottom: 50px;
}

.list_item {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 875px;
  height: 375px;
  background-color: #ffffff;
  padding: 34px;
  border-radius: 8px;
  margin-bottom: 19px;
}

.list_item .text {
  display: flex;
  flex-direction: column;
}

.list_item .text div:nth-child(1) {
  margin-bottom: 34px;
}

.list_item div:nth-child(1) {
  font-size: 34px;
  font-weight: 700;
  color: #000000;
}

.list_item div:nth-child(2) {
  text-indent: 2em;
  font-size: 15px;
  line-height: 24px;
  color: #777777;
  font-weight: normal;
}

.list_item img {
  width: 304px;
  height: 304px;
  margin-right: 31px;
}

.list_item:nth-child(2n) img {
  margin-left: 31px;
  margin-right: 0;
}

.cooperate_box {
  width: 100%;
  height: 489px;
  background-color: #ffffff;
  display: flex;
  justify-content: center;
}

.cooperate_top {
  text-align: center;
  font-size: 31px;
  color: #000000;
  margin: 44px 0 38px 0;
  font-weight: 600;
}

.cooperate .cooperate_bottom {
  display: flex;
  justify-content: space-between;
  width: 943px;
}

.bottom_item {
  width: 279px;
  height: 305px;
  border-radius: 8px;
  text-align: center;
  background-color: #f4f7ff;
  cursor: pointer;
}

.bottom_item:last-child {
  margin-right: 0px;
}

.bottom_item.active {
  background-color: #397be8;
  color: #ffffff;
}
.bottom_item.active .item_title{
  color: #ffffff;
}
.bottom_item img {
  width: 81px;
  height: 81px;
  margin-top: 30px;
}

.item_title {
  font-size: 25px;
  color: #000000;
  margin-bottom: 36px;
  font-weight: 600;
}

.item_content {
  width: 221px;
  display: flex;
  flex-wrap: wrap;
  margin: 0 auto;
  font-size: 19px;
}

.item_content div:nth-child(odd) {
  margin-right: 40px;
}

.item_content div {
  margin-bottom: 16px;
}

.bottom_item:last-child .item_content div {
  width: 213px;
  margin-right: 0px;
  justify-content: center;
  margin-bottom: 16px;
}
.bottom_item:nth-child(2) .item_content div {
  width: 213px;
  margin-right: 0px;
  justify-content: center;
  margin-bottom: 16px;
}