html,
body {
  padding: 0;
  margin: 0;
  font-family: Microsoft YaHei;
  height: 100%;
  width: 100%;
}
div {
  background-repeat: no-repeat;
  background-position: top center;
  background-size: 100% 100%;
}
.head {
  width: 100%;
  height: 7rem;
  background-image: url('../assets/pmhb/head-bg.png');
  display: flex;
  justify-content: center;
  align-items: center;
}
.head .search {
  display: flex;
  width: 6.6rem;
  padding-top: 100px;
}
.head .search input {
  flex: 1;
  height: 47px;
  background: #FFFFFF;
  border-top-left-radius: 23px;
  border-bottom-left-radius: 23px;
  padding-left: 15px;
}
.head .search input:focus {
  outline: none;
}
.head .search img {
  cursor: pointer;
}
.content {
  width: 1200px;
  margin: 0px auto;
}
.content .link {
  font-size: 18px;
  font-family: Source Han Sans CN;
  font-weight: 500;
  color: #999999;
  margin-top: 25px;
}
.content .nav {
  display: flex;
  flex-direction: column;
  margin-top: 80px;
}
.content .nav img {
  margin-bottom: 40px;
}
.content .list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}
.content .list .listItem {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  margin-bottom: 20px;
  margin-right: 20px;
  position: relative;
}
.content .list .listItem img {
  width: 100%;
  height: 100%;
}
.content .list .listItem a {
  width: 386px;
  height: 218px;
}
.content .list .listItem .title {
  font-size: 18px;
  font-family: Source Han Sans CN;
  font-weight: 400;
  color: #FEFEFE;
  position: absolute;
  bottom: 20px;
  width: 90%;
  padding: 0px 20px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.content .list .listItem:nth-child(3n) {
  margin-right: 0;
}
.content .list .listItem::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-color: rgba(0, 0, 0, 0.3);
  /* 设置父元素的透明度为50% */
}
.page-number {
  display: flex;
  justify-content: center;
}
.page-number .pagination {
  display: flex;
  list-style: none;
  font-size: 14px;
}
.page-number .pagination a {
  border: 1px solid #ddd;
  background-color: #fff;
  position: relative;
  float: left;
  padding: 6px 12px;
  margin-left: -1px;
  line-height: 1.42857143;
  color: #337ab7;
  text-decoration: none;
}
.page-number .pagination a span {
  color: #333333;
}
.page-number .pagination .active a {
  color: #fff;
  background-color: #49a7ff;
  border-color: #49a7ff;
}
.page-number .pagination li:first-child a {
  margin-left: 0;
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
}
.page-number .pagination li:last-child a {
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
}