* {
    margin: 0;
    padding: 0;
  }
  a,
  li,
  p,
  span {
    list-style: none;
    color: #333;
    font-size: 16px;
    text-decoration: none;
  }
  ul {
    margin-bottom: 0px;
  }
  a:hover {
    text-decoration: none !important;
  }
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-weight: normal;
  }
  input,
  textarea {
    outline: none;
    border: none;
  }
  body {
    font-family: "manrope";
  }
  body::-webkit-scrollbar {
    width: 3px;
    height: 0px;
  }
  body::-webkit-scrollbar-thumb {
    width: 3px;
    background-color: #df0100;
  }
 
  .unite {
    width: 1400px;
    max-width: 100%;
    margin: auto;
    padding: 100px 0;
  }
  .title_black {
    text-align: center;
  }
  .title_black span {
    font-size: 40px;
    font-weight: 600;
    font-weight: bold;
    display: block;
    padding-bottom: 5px;
    position: relative;
    margin-bottom: 20px;
  }
  .title_black span::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background-color: #df0100;
  }
  .title_black p {
    color: #666;
    font-size: 14px;
  }
  .see_btn {
    margin-top: 50px;
    text-align: center;
  }
  .see_btn a {
    display: inline-block;
    padding: 10px 40px;
    background-color: #df0100;
    color: #fff;
  }
  .header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 111;
  }
  .header .unite {
    width: 1400px;
    max-width: 100%;
    margin: auto;
    padding: 0;
  }
  .header .topContact {
    background-color: #df0100;
    padding: 10px 0;
  }
  .header .topContact .topContactMian {
    display: flex;
    justify-content: space-between;
  }
  .header .topContact .topContactMian div p i{
    font-weight: 600;
  }
  .header .topContact .topContactMian .left p {
    color: #dcdcdc;
    margin-bottom: 0;
  }
  .header .topContact .topContactMian .left p span {
    color: #dcdcdc;
    margin-right: 15px;
  }
  .header .topContact .topContactMian .right {
    display: flex;
  }
  .header .topContact .topContactMian .right a i {
    margin-left: 15px;
    color: #dcdcdc;
    font-size: 16px;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
  }
  .header .topContact .topContactMian .right a i:hover {
    color: #fff;
  }
  .header .menu_mian {
    background-color: #fff;
  }
  .header .menu_mian .unite .menu_box {
    display: flex;
    justify-content: space-between;
  }
  .header .menu_mian .unite .menu_box .left {
    display: flex;
    justify-content: space-between;
    flex: 1;
  }
  .header .menu_mian .unite .menu_box .left .logo {
    padding: 15px 0;
  }
  .header .menu_mian .unite .menu_box .left .logo a {
    display: block;
  }
  .header .menu_mian .unite .menu_box .left .logo a img {
    width: auto;
    max-width: 100%;
  }
  .header .menu_mian .unite .menu_box .left .menu {
    display: block;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul {
    display: flex;
    margin-bottom: 0;
    height: 100%;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li {
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 20px;
    position: relative;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li:hover .secondary {
    display: block;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li a {
    text-transform: uppercase;
    color: #333;
    font-size: 18px;
    font-weight: 600;
    font-weight: bold;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li a:hover {
    color: #df0100;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary {
    display: none;
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 100%);
    background-color: #dcdcdc;
    width: 300px;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary ul li {
    padding: 0;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary ul li a {
    width: 100%;
    display: block;
    text-align: center;
    padding: 10px 0;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary ul li a:hover {
    color: #fff;
    background-color: #df0100;
  }
  .header .menu_mian .unite .menu_box .left .menu .menu_ul .li_bg>a {
    color: #df0100;
  }
  .header .menu_mian .unite .menu_box .right {
    display: flex;
    align-items: center;
  }
  .header .menu_mian .unite .menu_box .right .contact_btn a {
    display: inline-block;
    padding: 4px 20px;
    color: #333;
    border: 1px solid #333;
    border-radius: 10px;
    font-size: 20px;
  }
  .header .menu_mian .unite .menu_box .right .contact_btn a:hover {
    background-color: #df0100;
    color: #fff;
    border: 1px solid #df0100;
    animation: myfirst4 1s;
    -webkit-animation: myfirst5 1s;
    /* Safari and Chrome */
  }
  .header .menu_mian .unite .menu_box .right .contact_btn a:hover i {
    color: #fff;
  }
  .header .menu_mian .unite .menu_box .right .contact_btn a i {
    color: #333;
  }
  .header .menu_mian .unite .menu_box .right .md_btn i {
    font-size: 30px;
  }
  @keyframes myfirst5 {
    0% {
      transform: rotate(-8deg);
      -ms-transform: rotate(-8deg);
      -webkit-transform: rotate(-8deg);
    }
    25% {
      transform: rotate(8deg);
      -ms-transform: rotate(8deg);
      -webkit-transform: rotate(8deg);
    }
    50% {
      transform: rotate(-5deg);
      -ms-transform: rotate(-5deg);
      -webkit-transform: rotate(-5deg);
    }
    75% {
      transform: rotate(5deg);
      -ms-transform: rotate(5deg);
      -webkit-transform: rotate(5deg);
    }
    100% {
      transform: rotate(0deg);
      -ms-transform: rotate(0deg);
      -webkit-transform: rotate(0deg);
    }
  }
  .banner {
    max-width: 1920px;
    margin: auto;
  }
  .banner img {
    width: 100%;
  }
  #demo .baner_mian {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 1400px;
    max-width: 80%;
    height: 50%;
  }
  #demo .baner_mian .baner_box {
    display: flex;
    justify-content: space-between;
  }
  #demo .baner_mian .baner_box .baner_text {
    width: 40%;
  }
  #demo .baner_mian .baner_box .baner_text span {
    font-size: 50px;
    display: inline-block;
    width: 70%;
    color: #df0100;
    font-weight: 600;
    font-weight: bold;
    margin-bottom: 25px;
  }
  #demo .baner_mian .baner_box .baner_text p {
    font-size: 25px;
  }
  #demo .baner_mian .baner_box .baner_text .baner_btn {
    margin-top: 25px;
  }
  #demo .baner_mian .baner_box .baner_text .baner_btn a {
    display: inline-block;
    padding: 15px 30px;
    background-color: #df0100;
    color: #fff;
  }
  #demo .baner_mian .baner_box .baner_img {
    width: 55%;
  }
  .products {
    background-color: #f9f9f9;
  }
  .products .pro_main {
    margin-top: 25px;
  }
  .products .pro_main a {
    display: block;
    padding: 40px 15px;
    background-color: #fff;
    overflow: hidden;
  }
  .products .pro_main a:hover img {
    transform: scale(1.1, 1.1);
    /* 标准语法 */
    -ms-transform: scale(1.1, 1.1);
    /* IE 9 */
    -webkit-transform: scale(1.1, 1.1);
    /* Safari */
  }
  .products .pro_main a img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
  }
  .advantage {
    background-color: #df0100;
  }
  .advantage .unite {
    width: 1400px;
  }
  .advantage .title {
    text-align: center;
  }
  .advantage .title span {
    font-size: 40px;
    font-weight: 600;
    font-weight: bold;
    display: block;
    padding-bottom: 5px;
    position: relative;
    margin-bottom: 20px;
    color: #fff;
  }
  .advantage .title span::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background-color: #fff;
  }
  .advantage .title p {
    color: #dcdcdc;
    margin-bottom: 0;
    font-size: 14px;
  }
  .advantage .ad_list {
    display: flex;
    margin: 40px 0;
  }
  .advantage .ad_list .left {
    display: flex;
    align-items: center;
  }
  .advantage .ad_list .left .left_img {
    width: 50px;
    margin-right: 15px;
  }
  .advantage .ad_list .left .left_img img {
    width: 100%;
  }
  .advantage .ad_list .right span {
    font-size: 20px;
    color: #fff;
    font-weight: 600;
    font-weight: bold;
  }
  .advantage .ad_list .right p {
    color: #dcdcdc;
  }
  .advantage .see_btn {
    margin-top: 25px;
    text-align: center;
  }
  .advantage .see_btn a {
    display: inline-block;
    padding: 10px 40px;
    background-color: #fff;
    color: #df0100;
    font-weight: 600;
    font-weight: bold;
  }

  .about .unite {
    padding: 100px 0;
    width: 1200px;
  }
  .about .about_main .about_title {
    text-align: center;
    margin-bottom: 50px;
  }
  .about .about_main .about_title span {
    font-size: 40px;
    font-weight: 600;
    font-weight: bold;
    display: block;
    padding-bottom: 5px;
    position: relative;
    margin-bottom: 20px;
    color: #fff;
  }
  .about .about_main .about_title span::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background-color: #fff;
  }
  .about .about_main .about_title p {
    color: #ffffff;
    margin-bottom: 0;
    font-size: 14px;
  }
  .about .about_main .about_text p {
    text-align: center;
    color: #fff;
  }
  .about .about_main .see_btn {
    margin-top: 100px;
    text-align: center;
  }
  .about .about_main .see_btn a {
    display: inline-block;
    padding: 10px 40px;
    background-color: #df0100;
    color: #fff;
    font-weight: 600;
    font-weight: bold;
  }
  .news .unite {
    width: 1400px;
  }
  .news .unite .news_title {
    text-align: center;
    margin-bottom: 50px;
  }
  .news .unite .news_title span {
    font-size: 40px;
    font-weight: 600;
    font-weight: bold;
    display: block;
    padding-bottom: 5px;
    position: relative;
    margin-bottom: 15px;
    color: #333;
  }
  .news .unite .news_title span::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 100px;
    height: 6px;
    background-color: #df0100;
  }
  .news .unite .news_title p {
    color: #666;
    margin-bottom: 0;
    font-size: 14px;
  }
  .news .unite .news_main {
    margin-bottom: 30px;
  }
  .news .unite .news_main a {
    display: block;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 20px;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
  }
  .news .unite .news_main a:hover {
    border-bottom: 1px solid #df0100;
  }
  .news .unite .news_main a:hover .top .text span {
    color: #df0100;
  }
  .news .unite .news_main a .top {
    display: flex;
    justify-content: space-between;
  }
  .news .unite .news_main a .top .text {
    width: 70%;
  }
  .news .unite .news_main a .top .text span {
    color: #333;
    font-size: 20px;
    font-weight: 600;
    font-weight: bold;
    display: block;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    transition: all .5s ease;
    -webkit-transition: all .5s ease;
  }
  .news .unite .news_main a .top .time i {
    color: #666;
  }
  .news .unite .news_main a .bottom p {
    color: #666;
    
  }
  .news .unite .see_btn {
    margin-top: 25px;
    text-align: center;
  }
  .news .unite .see_btn a {
    display: inline-block;
    padding: 10px 40px;
    background-color: #df0100;
    color: #fff;
    font-weight: 600;
    font-weight: bold;
  }
  .footer {
    background-color: #000000;
  }
  .footer .unite {
    width: 1400px;
  }
  .footer .unite .foter_logo {
    margin-bottom: 25px;
  }
  .footer .unite .foter_logo a {
    display: block;
  }
  .footer .unite .foter_logo a img {
    width: auto;
    max-width: 100%;
  }
  .footer .unite p {
    color: #fff;
  }
  .footer .unite .footer_title {
    color: #fff;
  }
  .footer .unite .footer_list li {
    padding-top: 10px;
  }
  .footer .unite .footer_list li a {
    color: #dcdcdc;
  }
  .footer .unite .footer_list li a:hover {
    color: #df0100;
  }
  .footer .unite .footer_list li span {
    color: #fff;
  }
  .footer .unite .footer_list li p {
    color: #dcdcdc;
    margin-bottom: 0;
    word-break: break-all;
  }
  .copyright {
    background-color: #000;
    border-top: 1px solid #fff;
  }
  .copyright .unite {
    padding: 10px 15px;
  }
  .copyright .unite .copyright_mian {
    display: flex;
    justify-content: space-between;
  }
  .copyright .unite .copyright_mian .left p {
    margin-bottom: 0;
    color: #fff;
    font-size: 14px;
  }
  .copyright .unite .copyright_mian .left p a {
    color: #fff;
    font-size: 14px;
  }
  .copyright .unite .copyright_mian .right a:hover i {
    color: #fff;
  }
  .copyright .unite .copyright_mian .right a i {
    font-size: 16px;
    color: #dcdcdc;
    margin-left: 10px;
  }

  @media only screen and (max-width: 1400px) {
    .unite {
      padding: 70px 0;
    }
    #demo .baner_mian .baner_box .baner_text span {
      font-size: 40px;
    }
    .title_black span {
      font-size: 35px;
    }
    .header .topContact .unite {
      width: 95%;
    }
    .header .menu_mian .unite {
      width: 95%;
    }
    .advantage .title span {
      font-size: 35px;
    }
    .about .unite {
      padding: 70px 0;
    }
    .about .about_main .about_title {
      margin-bottom: 25px;
    }
    .about .about_main .about_title span {
      font-size: 35px;
      margin-bottom: 20px;
    }
    .about .about_main .see_btn {
      margin-top: 70px;
    }
    .about .about_main .see_btn a {
      padding: 10px 40px;
    }
  }
  @media only screen and (max-width: 1200px) {
    .unite {
      padding: 50px 0;
    }
    #demo .baner_mian .baner_box .baner_text span {
      font-size: 25px;
      margin-bottom: 10px;
    }
    #demo .baner_mian .baner_box .baner_text p {
      font-size: 16px;
    }
    #demo .baner_mian .baner_box .baner_text .baner_btn a {
      display: inline-block;
      padding: 5px 10px;
      background-color: #df0100;
      color: #fff;
      font-size: 14px;
    }
    .title_black span {
      font-size: 30px;
    }
    .header .topContact .unite {
      width: 95%;
    }
    .header .menu_mian .unite {
      width: 95%;
    }
    .header .menu_mian .unite .menu_box .left .logo a {
      width: 120px;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li {
      padding: 0 25px;
    }
    .advantage .title span {
      font-size: 30px;
    }
    .about .unite {
      padding: 50px 0;
    }
    .about .about_main .about_title {
      margin-bottom: 25px;
    }
    .about .about_main .about_title span {
      font-size: 30px;
      margin-bottom: 20px;
    }
    .about .about_main .see_btn {
      margin-top: 50px;
    }
    .about .about_main .see_btn a {
      padding: 10px 40px;
    }
    .news .unite {
      padding: 50px 0;
    }
    .news .unite .news_title {
      margin-bottom: 30px;
    }
    .news .unite .news_main {
      margin-bottom: 10px;
    }
    .news .unite .news_main a {
      padding-bottom: 10px;
    }
  }
  @media(max-width: 1145px){
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li a {
      font-size: 16px;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li {
      padding: 0 15px;
    }
    .header .menu_mian .unite .menu_box .right .contact_btn a {
      padding: 4px 15px;
      font-size: 16px;
    }
  }
  @media only screen and (max-width: 992px) {
    .unite {
      padding: 25px 0;
    }
    #demo .baner_mian .baner_box {
      justify-content: center;
    }
    #demo .baner_mian .baner_box .baner_text {
      display: none;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
    }
    #demo .baner_mian .baner_box .baner_text span {
      font-size: 50px;
      display: inline-block;
      width: 70%;
      color: #df0100;
      font-weight: 600;
      font-weight: bold;
      margin-bottom: 25px;
    }
    #demo .baner_mian .baner_box .baner_text p {
      font-size: 25px;
    }
    #demo .baner_mian .baner_box .baner_text .baner_btn {
      margin-top: 25px;
    }
    #demo .baner_mian .baner_box .baner_text .baner_btn a {
      display: inline-block;
      padding: 15px 30px;
      background-color: #df0100;
      color: #fff;
    }
    #demo .baner_mian .baner_box .baner_img {
      width: 55%;
      display: none;
    }
    .header .topContact {
      display: none;
    }
    .header .menu_mian .unite {
      width: 100%;
      padding: 0 15px;
    }
    .header .menu_mian .unite .menu_box .left .logo a {
      width: 120px;
    }
    .header .menu_mian .unite .menu_box .left .menu {
      display: none;
      position: absolute;
      left: 0;
      bottom: 0;
      transform: translateY(100%);
      width: 100%;
      background-color: #fff;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul {
      flex-direction: column;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li {
      padding: 0 15px;
      flex-direction: column;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li::after a {
      border-bottom: initial;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li a {
      display: block;
      width: 100%;
      padding: 15px 0;
      font-size: 16px;
      border-bottom: 1px solid #f9f9f9;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary {
      position: initial;
      left: initial;
      bottom: initial;
      transform: translateY(0);
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li .secondary ul li a {
      text-align: initial;
      padding-left: 15px;
    }
    .products .pro_main a {
      padding: 15px 15px;
    }
    .advantage .unite {
      padding: 25px 0;
    }
    .advantage .title {
      margin-bottom: 20px;
    }
    .advantage .title span {
      font-size: 25px;
      margin-bottom: 10px;
    }
    .advantage .title span:after {
      height: 4px;
    }
    .advantage .title p {
      font-size: 14px;
    }
    .advantage .ad_list {
      margin: 0;
      margin-top: 5px;
    }
    .advantage .ad_list .left {
      display: none;
    }
    .about .unite {
      padding: 25px 0;
    }
    .about .about_main .about_title {
      margin-bottom: 20px;
    }
    .about .about_main .about_title span {
      font-size: 25px;
      margin-bottom: 10px;
    }
    .about .about_main .about_title p {
      font-size: 14px;
    }
    .about .about_main .about_text p {
      overflow: hidden;
      text-overflow: ellipsis;
      display: -webkit-box;
      -webkit-line-clamp: 5;
      -webkit-box-orient: vertical;
    }
    .about .about_main .see_btn {
      margin-top: 20px;
    }
    .about .about_main .see_btn a {
      padding: 8px 20px;
    }
    .header .menu_mian .unite .menu_box .left .menu .menu_ul li:hover .secondary{
      width: 100%;
    }
  }
  @media only screen and (max-width: 768px) {
    .title_black span {
      font-size: 25px;
    }
    .copyright .unite {
      padding: 10px 10px;
    }
    .copyright .unite .copyright_mian .right {
      display: none;
    }
  }
  @media only screen and (max-width: 576px) {
    .title_black p {
      font-size: 12px;
    }
    .footer .unite {
      padding: 25px 0;
    }
    .footer .unite .footer_list li .contant_btn {
      margin-top: 15px;
      text-align: center;
    }
    .footer .unite .footer_list li .contant_btn a {
      display: inline-block;
      border: 1px solid #fff;
      padding: 10px 30px;
      width: 70%;
    }
    .copyright .unite .copyright_mian .left p {
      text-align: center;
    }
    .news .unite {
      padding: 25px 0;
    }
    .news .unite .news_title {
      margin-bottom: 20px;
    }
    .news .unite .news_title span {
      font-size: 25px;
    }
    .news .unite .news_main {
      margin-bottom: 10px;
    }
    .news .unite .news_main a {
      padding-bottom: 0px;
    }
    .news .unite .news_main a .top .text span {
      font-size: 18px;
      font-weight: initial;
    }
  }