.main > div:first-child {
  width: 1200px;
  position: absolute;
  top: 0;
}
.main_content {
  width: 1200px;
  color: #394e69;
}
.main_list {
  width: 100%;
  margin-bottom: 50px;
}
.main_item {
  width: 100%;
  margin-right: 80px;
  padding: 39px 0 42px 0;
  border-bottom: 1px solid #cde6f7;
  display: flex;
  align-items: flex-start;
  box-sizing: border-box;
  transition: all 0.3s ease;
  position: relative;
}
.main_item:hover {
  padding-left: 20px;
}
.main_item:nth-child(even) {
  margin-right: 0;
}
.main_item_date {
  width: 105px;
  box-sizing: border-box;
  margin-right: 54px;
  color: #bbd3df;
}
.main_item_date p {
  height: 36px;
  line-height: 36px;
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 17px;
}
.main_item_date div {
  height: 18px;
  line-height: 18px;
  font-size: 19px;
}
.main_item_paragraph {
  width: 800px;
}
.main_item_title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 22px;
  line-height: 22px;
  font-size: 22px;
  margin-bottom: 23px;
  color: #186daa;
}
.main_item_content {
  display: -webkit-box;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 24px;
  color: #888888;
}
.history_area {
  width: 1200px;
}
.history_item {
  width: 378px;
  height: 355px;
  border: 5px solid transparent;
  transition: all 0.3s ease;
  box-sizing: border-box;
  margin-bottom: 100px;
}
.history_item:hover {
  border-color: #bbd3df;
}
.history_img {
  width: 100%;
  height: 231px;
}
.history_img img {
  width: 100%;
  height: 100%;
}
.history_title {
  height: 18px;
  line-height: 18px;
  font-size: 18px;
  padding:17px 10px 45px 18px;
  background-color: #fff;
}
.history_date {
  height: 14px;
  line-height: 14px;
  font-size: 14px;
  color: #999999;
  padding-left: 18px;
  padding-bottom: 20px;
  background-color: #fff;
}
.more {
  position: absolute;
  top: 39px;
  right: 0;
}
.more span {
  height: 16px;
  line-height: 16px;
  font-family: 59;
  color: #555555;
  margin-bottom: 9px;
}
@media (min-width: 1200px) {
  .history_area {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}
@media screen and (min-width: 800px) and (max-width: 1200px) {
  .main > div:first-child,
  .main_content,
  .history_area {
    width: 800px;
  }
  .history_item {
    width: 250px;
    height: 272px;
    margin-bottom: 70px;
  }
  .history_img {
    height: 160px;
  }
  .history_title {
    font-size: 16px;
    padding: 15px 10px 45px 10px;
  }
  .history_date {
    padding-left: 10px;
    padding-bottom: 10px;
  }
  .main_item_date {
    margin-right: 50px;
  }
  .main_item_date p {
    font-size: 30px;
    white-space: nowrap;
  }
  .main_list {
    width: 750px;
  }
}
@media (max-width: 819px) {
  .main > div:first-child,
  .main_content, 
  .history_area,
  .history_item {
    width: 100%;
  }
  .history_item {
    margin-bottom: 30px;
  }
  .more {
    display: none;
  }
  .main_item_title {
    white-space: normal;
    margin-bottom: 15px;
  }
  .main_list {
    margin-bottom: 30px;
  }
  .main_item {
    padding: 25px 0 30px 0;
  }
  .main_item_date {
    margin-right: 30px;
  }
  .main_item_date p {
    height: 25px;
    line-height: 25px;
    font-size: 25px;
    margin-bottom: 10px;
    white-space: nowrap;
  }
}