* {
  box-sizing: border-box;
}
html,
body {
  padding: 0;
  margin: 0;
  position: relative;
}
html{
  min-width: 1300px;
}

a{
  text-decoration: none;
}

body {
  background: url("../img/big_bg.jpg");
  background-repeat: no-repeat;
  background-position: center top;
}

.app {
  width: 1300px;
  margin: auto;
  padding: 0px 50px;
  padding-top: 650px;
  /* padding-bottom: 125px; */
}

.frame_1 {
  width: 100%;
  /* border-radius: 10px; */
  background-color: #fff;
  box-shadow: 0 0px 10px 5px rgba(0, 0, 0, 0.3);
  padding: 20px 20px 10px 20px;
  padding-top: 10px;
}
/* 20220907 抗疫专题 */
.zxdt_title{
  height: 80px;
  background: url("../img/title_zxdt.png");
  background-repeat: no-repeat;
  background-position: center top;
  margin-top: -27px;
}

.frame_1_box{
  margin-top: 20px;
  display: flex;
  flex-flow: row nowrap;
  justify-content: flex-start;
  align-items: flex-start;
}
.frame_1_box> div:first-child {
  width: 550px;
  height: 380px;
}
.frame_1_box> div:first-child img {
  width: 100%;
  height: 100%;
}
.frame_1_box > .items {
  flex: 1;
  margin-left: 40px;
}
.frame_1_box > .items > .item:not(:first-child) {
  margin-top: 15px;
}
.frame_1_box > .items > .item > .title {
  font-size: 25px;
  font-weight: 500;
}
.frame_1_box > .items > .item > .summary {
  margin-top: 5px;
  font-size: 14px;
  line-height: 25px;
  color: #6f6f6f;
}
.frame_2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-row-gap: 15px;
  grid-column-gap: 24px;
  margin-top: 10px;
}
.frame_2 h2 {
  font-size: 25px;
}

.small_item {
  display: flex;
  flex-flow: row nowrap;
  justify-content: flex-start;
  align-items: flex-start;
}
.small_item > div:first-child {
  width: 170px;
  height: 155px;
  position: relative;
  overflow: hidden;
  margin-left: 33px;
}
.small_item > div:first-child img{
  width: 170px;
  height: 155px;
}
.small_item > .cont_small {
  flex: 1;
  margin-left: 30px;
  line-height: 40px;
  font-size: 18px;
  color: #6f6f6f;
}

.tpbd_title{
  height: 155px;
  background: url("../img/title_tpbd.png");
  background-repeat: no-repeat;
  background-position: center center;
}

.grid_col4{
  display: grid;
  grid-template-columns: repeat(4,1fr);
  grid-column-gap: 40px;
  margin-top: 0;
  margin-bottom: 100px;
}
.grid_col4>div{
  width: 260px;
  height: 200px;
}

.grid_col4 img{
  width: 100%;
  height: 100%;
}

.grid_col4 .contnet{
  line-height: 27px;
  font-size: 16px;
  color: black;
  margin-top: -6px;
  background-color: #e7e7e7;
  color: #6f6f6f;
  padding: 10px 40px;
}

.about_us{
  width: 100%;
  height: 200px;
  background-color: #004caa;
}
.footer{
  width: 1300px;
  height: 200px;
  margin: auto;
  padding: 40px 50px 30px 50px;
  display: grid;
  grid-template-columns: 10% 60% 30%;
}

.footer .site_name{
  font-size: 17px;
  font-weight: 500;
  line-height: 29px;
  color: #f6f6f6;
  margin-bottom: 10px;
  margin-top: -5px;
}

.footer .line{
  font-size: 14px;
  line-height: 22px;
  color: #f6f6f6;
}