.top_box {
  width: 100%;
  height: 500px;
  background: url('../images/banner.png') no-repeat center;
  background-size: cover;
  display: flex;
  align-items: center;
}
.top_box .top_child {
  width: 1280px;
  margin: 0 auto;
  padding: 0 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.top_box .top_child h3 {
  width: 634px;
  font-family: s;
  font-weight: bold;
  font-size: 54px;
  color: #FFFFFF;
  line-height: 63px;
  margin-bottom: 16px;
}
.top_box .top_child span {
  font-family: s;
  font-weight: 600;
  font-size: 20px;
  color: #BDBDBD;
  margin-bottom: 32px;
}
.top_box .top_child .span1 {
  font-size: 24px;
}
#content {
  padding: 40px 60px;
}
#content .public {
  margin-bottom: 40px;
}
#content .public h3 {
  font-family: s;
  font-weight: 600;
  font-size: 24px;
  color: #333333;
  text-align: center;
  margin-bottom: 24px;
}
#content .public .public_list {
  display: grid;
  grid-template-columns: repeat(3, minmax(50px, 1fr));
  grid-gap: 16px;
  margin-bottom: 16px;
}
#content .public .public_list .pubic_item {
  padding: 16px;
  background: #FFFFFF;
  border-radius: 16px 16px 16px 16px;
  border: 1px solid #ECECEC;
  display: flex;
  align-items: center;
}
#content .public .public_list .pubic_item img {
  width: 40px;
  height: 40px;
  margin-right: 8px;
}
#content .public .public_list .pubic_item .shen {
  display: none;
}
#content .public .public_list .pubic_item h4 {
  font-family: s;
  font-weight: 600;
  font-size: 16px;
  color: #333333;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#content .public .public_list .pubic_item:hover {
  box-shadow: 0px 6px 24px 0px rgba(0, 0, 0, 0.12);
}
#content .public .public_list .pubic_item:hover .qian {
  display: none;
}
#content .public .public_list .pubic_item:hover .shen {
  display: block;
}
#content .public .public_list .pubic_item:hover h4 {
  color: #4285F4;
}
#content .public .tiao {
  font-family: m;
  font-weight: 600;
  font-size: 16px;
  color: #4285F4;
  display: block;
  text-align: center;
}
@media (min-width: 860px) and (max-width: 1200px) {
  .top_box {
    height: auto;
  }
  .top_box .top_child {
    width: 100%;
    padding: 50px 25px;
  }
  .top_box .top_child h3 {
    width: 410px;
    font-size: 36px;
    line-height: 44px;
    margin-bottom: 16px;
  }
  .top_box .top_child .span2 {
    width: 280px;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 0;
  }
  #content {
    padding: 24px 16px;
  }
  #content .public {
    margin-bottom: 24px;
  }
  #content .public .public_list {
    grid-template-columns: repeat(3, minmax(50px, 1fr));
  }
}
@media (min-width: 750px) and (max-width: 859px) {
  .top_box {
    height: auto;
  }
  .top_box .top_child {
    width: 100%;
    padding: 50px 25px;
  }
  .top_box .top_child h3 {
    width: 410px;
    font-size: 36px;
    line-height: 44px;
    margin-bottom: 16px;
  }
  .top_box .top_child .span2 {
    width: 280px;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 0;
  }
  #content {
    padding: 24px 16px;
  }
  #content .public {
    margin-bottom: 24px;
  }
  #content .public .public_list {
    grid-template-columns: repeat(3, minmax(50px, 1fr));
  }
}
@media (min-width: 560px) and (max-width: 749px) {
  .top_box {
    height: auto;
  }
  .top_box .top_child {
    width: 100%;
    padding: 50px 25px;
  }
  .top_box .top_child h3 {
    width: 310px;
    font-size: 28px;
    line-height: 33px;
    margin-bottom: 16px;
  }
  .top_box .top_child .span2 {
    width: 280px;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 0;
  }
  #content {
    padding: 24px 16px;
  }
  #content .public {
    margin-bottom: 24px;
  }
  #content .public .public_list {
    grid-template-columns: repeat(2, minmax(50px, 1fr));
  }
}
@media (min-width: 0px) and (max-width: 559px) {
  .top_box {
    height: auto;
  }
  .top_box .top_child {
    width: 100%;
    padding: 50px 25px;
  }
  .top_box .top_child h3 {
    width: 219px;
    font-size: 28px;
    line-height: 33px;
    margin-bottom: 16px;
  }
  .top_box .top_child .span2 {
    width: 187px;
    font-size: 14px;
    line-height: 16px;
    margin-bottom: 0;
  }
  #content {
    padding: 24px 16px;
  }
  #content .public {
    margin-bottom: 24px;
  }
  #content .public .public_list {
    grid-template-columns: repeat(1, minmax(50px, 1fr));
  }
}