input {
    padding: 0;
    margin: 0;
    font-family: 'Microsoft YaHei';
}

img {
    border: none;
    background: none;
    vertical-align: middle;
    max-width: 100%;
}

ul,
ol,
li {
    list-style-type: none;
}

select,
input,
img,
select {
    vertical-align: middle;
}

table {
    border-collapse: collapse;
    border-spacing: 0
}

table,
th,
td {
    vertical-align: middle
}

.clearfix:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    overflow: hidden;
    visibility: hidden;
}

.clearfix {
    zoom: 1
}

.clearboth {
    height: 0px;
    line-height: 0px;
    overflow: hidden;
    clear: both;
    font-size: 0px;
}

h1,
h2,
h3,
h4 {
    font-size: 12px;
    font-weight: bold;
    line-height: 1.5
}

hr {
    border: 0;
    border-top: 1px solid #ccc;
    height: 0;
}

p {
    margin: 0;
}


/*滚动*/

#demo {
    overflow: hidden;
    width: 100%;
    margin: 0 auto;
}

#indemo {
    float: left;
    width: 800%
}

#demo1 {
    float: left;
}

#demo2 {
    float: left;
}

#m_demo {
    overflow: hidden;
    width: 100%;
    margin: 0 auto;
}

#m_indemo {
    float: left;
    width: 800%
}

#m_demo1 {
    float: left;
}

#m_demo2 {
    float: left;
}


/*----- Common css ------*/

.fl {
    float: left;
}

.fr {
    float: right;
}

.di {
    _display: inline;
}

.fwn {
    font-weight: normal;
}

.dib {
    *display: inline;
    _zoom: 1;
    _display: inline;
    _font-size: 0px;
}

@font-face {
    font-family: dinpro;
    src: url(../fonts/iconfont/dinpro.OTF);
}

@media (min-width:1440px) {
    .container {
        width: 1380px
    }
}

@media (min-width:1650px) {
    .container {
        width: 1610px
    }
}


/*头部样式*/


/* box-head */

.box-head {
    height: 100px;
}


/* box-company */

.box-company {
    padding: 4.5% 0;
}

.company-img {
    width: 50%;
    float: left;
}

.company-img img {
    max-width: 100%;
}

.company-con {
    width: 45.7%;
    float: right;
}

.company-con h3 {
    font-size: 40px;
    font-weight: bold;
    margin-top: 5%;
    margin-bottom: 16px;
}

.company-con h4 {
    font-size: 24px;
}

.company-text {
    font-size: 18px;
    color: #666;
    line-height: 1.8;
    margin-top: 32px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
}

.company-more {
    display: block;
    width: 222px;
    height: 50px;
    line-height: 50px;
    background-color: #f3a306;
    color: #000;
    padding-left: 60px;
    font-size: 16px;
    margin-top: 10%;
}

@media (max-width:1439px) {
    .company-more {
        margin-top: 3%;
    }
    .company-text {
        margin-top: 18px;
    }
    .company-con h3 {
        margin-top: 3%;
    }
}

@media (max-width:1199px) {
    .company-text {
        font-size: 16px;
        color: #666;
        line-height: 1.8;
        margin-top: 32px;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 3;
        overflow: hidden;
    }
    .company-con h3 {
        font-size: 34px;
        font-weight: bold;
        margin-top: 3%;
        margin-bottom: 16px;
    }
}

@media(max-width:991px) {
    .company-img {
        width: 100%;
        float: none;
    }
    .company-con {
        width: 100%;
        float: none;
    }
}

@media (max-width:767px) {
    .company-con h3 {
        font-size: 28px;
        font-weight: bold;
        margin-top: 3%;
        margin-bottom: 10px;
    }
    .company-text {
        font-size: 16px;
        color: #666;
        line-height: 1.8;
        margin-top: 12px;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 3;
        overflow: hidden;
    }
    .box-company {
        padding: 8.5% 0;
    }
}


/* box-product */

.box-product {
    background-color: #f9f9f9;
    padding-top: 3.2%;
    padding-bottom: 3.8%;
}

.main-title h2 {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    margin-right: 26px;
}

.main-title span {
    font-size: 36px;
    color: #d5d5d5;
    font-family: Arial, Helvetica, sans-serif;
}

.main-title p {
    font-size: 24px;
    color: #666;
    position: relative;
    left: 55px;
    margin-top: 10px;
}

.main-title p:before {
    position: absolute;
    content: '';
    width: 38px;
    height: 1px;
    background-color: #d5d5d5;
    left: -55px;
    top: 45%;
}

.product-text {
    position: relative;
}

.product-item {
    border-radius: 16px;
}

.product-text img {
    border-radius: 16px;
    width: 100%;
}

.product-text h3 {
    position: absolute;
    bottom: 6%;
    left: 6%;
    background-color: rgba(0, 0, 0, 0.4);
    width: 45%;
    font-size: 20px;
    color: #fff;
    line-height: 2.6;
    text-align: center;
}

.product-arrow {
    position: relative;
}

.box-product .swiper-button-prev {
    background-image: url(../images/productleft.jpg);
    right: 80px;
    left: auto;
}

.box-product .swiper-button-prev:hover {
    background-image: url(../images/productleft1.jpg);
}

.box-product .swiper-button-next {
    background-image: url(../images/productright.jpg);
    right: 0;
    left: auto;
}

.box-product .swiper-button-next:hover {
    background-image: url(../images/productright1.jpg);
}

.box-product .swiper-button-next,
.box-product .swiper-button-prev {
    position: absolute;
    top: 50%;
    width: 70px;
    height: 70px;
    margin-top: -45%;
    z-index: 10;
    cursor: pointer;
    background-size: 70px 70px;
    background-position: center;
    background-repeat: no-repeat;
    outline: none;
}

.product-swiper {
    margin-top: 4.1%;
    padding-bottom: 1%;
}

@media (max-width:1649px) {
    .box-product .swiper-button-next,
    .box-product .swiper-button-prev {
        margin-top: -43%;
    }
}

@media (max-width:1439px) {
    .box-product .swiper-button-next,
    .box-product .swiper-button-prev {
        margin-top: -45%;
    }
}

@media (max-width:1199px) {
    .product-text h3 {
        position: absolute;
        bottom: 6%;
        left: 6%;
        background-color: rgba(0, 0, 0, 0.4);
        width: 88%;
        font-size: 18px;
        color: #fff;
        line-height: 2.6;
        text-align: center;
    }
    .box-product .swiper-button-next,
    .box-product .swiper-button-prev {
        position: absolute;
        top: 50%;
        width: 70px;
        height: 70px;
        margin-top: -45%;
        z-index: 10;
        cursor: pointer;
        background-size: 70px 70px;
        background-position: center;
        background-repeat: no-repeat;
        outline: none;
    }
}

@media (min-width:992px) {
    .product-item:hover .product-text h3 {
        background-color: #f3a306;
    }
    .product-item:hover {
        -webkit-box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
        box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
    }
}

@media (max-width:991px) {
    .main-title h2 {
        font-size: 30px;
        font-weight: bold;
        color: #333;
        margin-right: 26px;
    }
    .main-title span {
        font-size: 28px;
        color: #d5d5d5;
        font-family: Arial, Helvetica, sans-serif;
    }
    .main-title p {
        font-size: 16px;
        color: #666;
        position: relative;
        left: 55px;
        margin-top: 10px;
    }
    .product-arrow {
        display: none;
    }
}


/* youshi */

.box-youshi {
    padding-top: 3.3%;
    padding-bottom: 4%;
}

.youshi-swiper {
    margin-top: 4%;
    padding-bottom: 1%;
}

.youshi-cover {
    position: relative;
}

.youshi-cover .bg {
    width: 100%;
    height: 100%;
    background: url(../images/youshicover1.png) no-repeat;
    background-position: center;
    position: absolute;
    left: 0;
    top: 0;
    border-radius: 16px;
}

.bg-inner {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.bg-con {
    position: absolute;
    bottom: 17%;
    left: 10%;
    transition: all .5s;
}

.bg-con h3 {
    font-size: 24px;
    color: #fff;
    font-weight: bold;
    margin-bottom: 7%;
}

.bg-con .bg-text {
    display: none;
    color: #fff;
    font-size: 16px;
    line-height: 1.625;
}

.youshi-item {
    border-radius: 16px;
}

.youshi-item img {
    border-radius: 16px;
    max-width: 100%;
}

@media (min-width:992px) {
    .youshi-item:hover .youshi-cover .bg {
        background: url(../images/youshicover2.png) no-repeat;
    }
    .youshi-item:hover .bg-con {
        bottom: 13%;
    }
    .youshi-item:hover .bg-con .bg-text {
        display: block;
    }
    .youshi-item {
        transition: all .5s;
    }
    .youshi-item:hover {
        -webkit-box-shadow: 0 1px 15px rgba(0, 0, 0, .1);
        box-shadow: 0 1px 15px rgba(0, 0, 0, .1);
    }
}

@media (max-width:991px) {
    .bg-con {
        position: absolute;
        bottom: 24%;
        left: 4%;
        transition: all .5s;
    }
}


/* box-join */

.box-join {
    background: url(../images/joinbg.jpg) no-repeat center;
    padding: 4% 0;
    background-size: cover;
}

.message-tel {
    background: url(../images/messagetel.png) no-repeat;
    width: 392px;
    height: 55px;
}

.join-left h2 {
    font-size: 36px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 3%;
}

.join-left p {
    font-size: 28px;
    color: #fff;
    margin-bottom: 11%;
}

.message-tel a {
    line-height: 55px;
    font-size: 18px;
    color: #000;
    width: 118px;
    text-align: center;
}

.message-tel span {
    line-height: 55px;
    font-size: 44px;
    color: #fff;
    font-family: dinpro, Helvetica, sans-serif;
    margin-left: 25px;
}

@media (max-width:1199px) {
    .join-left p {
        font-size: 24px;
        color: #fff;
        margin-bottom: 8%;
    }
}

@media (max-width:991px) {
    join-left {
        float: none;
    }
    .x-message-wrap {
        width: 100%;
    }
    .join-left h2 {
        font-size: 28px;
        font-weight: bold;
        color: #fff;
        margin-bottom: 3%;
    }
    .join-left p {
        font-size: 20px;
        color: #fff;
        margin-bottom: 8%;
    }
    .message-tel {
        background: url(../images/messagetel2.png) no-repeat;
        width: 273px;
        height: 39px;
    }
    .message-tel a {
        line-height: 39px;
        font-size: 14px;
        color: #000;
        width: 82px;
        text-align: center;
    }
    .message-tel span {
        line-height: 39px;
        font-size: 26px;
        color: #fff;
        font-family: dinpro, Helvetica, sans-serif;
        margin-left: 24px;
    }
}

@media (max-width: 767px) {
    .join-left p {
        font-size: 16px;
        color: #fff;
        margin-bottom: 8%;
    }
}


/* box-case */

.box-case {
    padding-top: 3%;
    padding-bottom: 3.5%;
}

.case-con {
    margin-top: 3.5%;
}

.case-left {
    width: 49.5%;
}

.case-right {
    width: 50.5%;
}

.case-right li {
    width: 48%;
    margin-left: 2%;
    margin-bottom: 2%;
}

.case-left-inner,
.case-right-inner {
    position: relative;
    overflow: hidden;
}

.case-left-inner img,
.case-right-inner img {
    border-radius: 16px;
    width: 100%;
}

.case-left-inner h3,
.case-right-inner h3 {
    position: absolute;
    bottom: -100%;
    text-align: center;
    font-size: 18px;
    color: #fff;
    line-height: 3.2;
    background-color: rgba(0, 0, 0, 0.5);
    width: 100%;
    transition: all .5s;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.case-left li:hover h3 {
    bottom: 0;
}

.case-right li:hover h3 {
    display: block;
    bottom: 0;
}

.case-more,
.news-more {
    display: block;
    width: 180px;
    height: 48px;
    background-color: #fff;
    border-radius: 50px;
    line-height: 48px;
    text-align: center;
    margin-top: 20px;
    -webkit-box-shadow: 0 1px 10px rgba(0, 0, 0, .1);
    box-shadow: 0 1px 10px rgba(0, 0, 0, .1);
    color: #666;
    font-size: 14px;
}

@media(max-width:767px) {
    .case-title-left {
        float: none;
    }
    .case-more {
        float: none;
    }
    .case-left {
        width: 100%;
        float: none;
    }
    .case-right {
        width: 100%;
        float: none;
    }
    .case-right li {
        width: 48.5%;
        margin-left: 0%;
        margin-bottom: 0%;
        margin-top: 3%;
    }
    .case-right li:nth-child(odd) {
        margin-right: 3%;
    }
    .case-left-inner h3,
    .case-right-inner h3 {
        bottom: 0;
        font-size: 15px;
    }
}

/* box-news */

.box-news {
    background-color: #f9f9f9;
    padding-top: 3.4%;
}

.news-title-top h2,
.case-title-top h2 {
    font-size: 36px;
    color: #333;
    font-weight: bold;
}

.news-title-top span,
.case-title-top span {
    font-size: 36px;
    color: #d5d5d5;
    font-weight: bold;
    font-family: Arial, Helvetica, sans-serif;
}

.news-title-left p,
.case-title-left p {
    font-size: 24px;
    color: #666;
    position: relative;
    left: 55px;
}

.news-title-left p:before,
.case-title-left p:before {
    position: absolute;
    content: '';
    width: 38px;
    height: 1px;
    background-color: #d5d5d5;
    left: -55px;
    top: 45%;
}

.news-swiper {
    padding-bottom: 7.5%;
    margin-top: 2%;
    padding-top: 2%;
}

.box-news .swiper-container-horizontal>.swiper-pagination-bullets,
.box-news .swiper-pagination-custom,
.box-news .swiper-pagination-fraction {
    bottom: 12%;
    left: 0;
    width: 100%;
}

.box-news .swiper-container-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet {
    margin: 0 8.5px;
}

.box-news .swiper-pagination-bullet {
    width: 14px;
    height: 14px;
    display: inline-block;
    border-radius: 100%;
    background: #000;
    opacity: .3;
    outline: none;
}

.box-news .swiper-pagination-bullet-active {
    opacity: 1;
    background: #f3a306;
}

.news-item {
    position: relative;
    padding: 2.5% 3% 4% 3%;
    background-color: #efefef;
}

.news-item .news-time {
    font-size: 16px;
    color: #666;
    margin-bottom: 5px;
}

.news-item h2 {
    font-size: 24px;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 7%;
}

.news-text {
    font-size: 16px;
    color: #666;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
    line-height: 1.75;
}

.news-item {
    -webkit-transition: all .2s linear;
    transition: all .2s linear;
    border-radius: 16px;
}

.news-item {
    border-radius: 16px;
}

.news-item h3 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}

.news-item:hover h3 {
    display: block;
    animation-delay: 1.5s;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    border-radius: 16px;
}

@media (max-width:1439px) {
    .box-news .swiper-container-horizontal>.swiper-pagination-bullets,
    .box-news .swiper-pagination-custom,
    .box-news .swiper-pagination-fraction {
        bottom: 9%;
        left: 0;
        width: 100%;
    }
}

@media (min-width:992px) {
    .news-item:hover {
        -webkit-transform: translate3d(0, -20px, 0);
        transform: translate3d(0, -20px, 0);
    }
}

@media (max-width:767px) {
    .news-title-left {
        float: none;
    }
    .news-more {
        float: none;
    }
    .box-news .swiper-container-horizontal>.swiper-pagination-bullets,
    .box-news .swiper-pagination-custom,
    .box-news .swiper-pagination-fraction {
        display: none;
    }
    .news-item h2 {
        font-size: 18px;
        color: #333;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        margin-bottom: 7%;
    }
}

.main-flink span {
    color: #666;
    font-size: 14px;
    font-weight: bold;
}

.main-flink a {
    color: #333;
    font-size: 12px;
    padding-right: 8px;
}

.main-flink a:hover {
    color: #f3a306;
}

.main-flink a:not(:last-child) {
    border-right: 1 solid #333;
}


/* box-foot */

.box-foot {
    background-color: #222;
    padding-top: 3.5%;
}

.main-flink {
    line-height: 2;
    padding: 1.125% 0;
}

.foot-menu {
    width: 64.5%;
}

.foot-menu dl {
    float: left;
    width: 16%;
}

.foot-menu dl dt {
    font-size: 20px;
    color: #fff;
    font-weight: bold;
    margin-bottom: 14%;
}

.foot-menu dl dd a {
    font-size: 16px;
    color: #c5c5c5;
    line-height: 2;
}

.foot-contact {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1%;
    padding-left: 4%;
}

.foot-contact h3 {
    color: #999;
    font-size: 16px;
    margin-bottom: 1%;
}

.foot-contact>p {
    font-size: 30px;
    color: #fff;
    font-weight: bold;
    margin-bottom: 1.5%;
}

.footcontact-text {
    font-size: 14px;
    color: #999;
    line-height: 1.8;
}

.x-seo {
    font-size: 14px;
    color: #999;
}

.x-seo a {
    color: #999;
}

.foot-wechat {
    text-align: center;
}

.foot-wechat p {
    font-size: 14px;
    color: #999;
    margin-top: 9%;
}

.box-bottom {
    background-color: #222;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-bottom {
    line-height: 1.7;
    padding: 30px 0;
}

.copyright-left {
    color: #999;
    float: left;
}

.x-region {
    color: #999;
    float: right;
}

.main-bottom a {
    color: #999;
}

@media(max-width:1649px) {
    .foot-menu {
        width: 57.5%;
    }
    .foot-contact {
        padding-top: 0;
    }
}

@media (max-width:1439px) {
    .foot-menu {
        width: 54.5%;
    }
}

@media (max-width:1199px) {
    .foot-menu {
        float: none;
        width: 100%;
        margin-bottom: 4%;
    }
    .foot-contact {
        float: left;
        margin-right: 10%;
    }
    .foot-wechat {
        float: left;
    }
    .foot-contact {
        border-left: none;
        padding-top: 1%;
        padding-left: 0;
    }
    .main-foot {
        padding-bottom: 4%;
    }
}

@media (min-width:992px) {
    .foot-menu dl dd a:hover {
        color: #f3a306;
    }
    .copyright-left a:hover,
    .x-region a:hover {
        color: #f3a306;
    }
    .x-seo a:hover {
        color: #f3a306;
    }
}

@media (max-width:991px) {
    .main-foot {
        padding-bottom: 4%;
    }
    .foot-menu {
        display: none;
    }
    .x-seo {
        display: none;
    }
    .copyright-left {
        float: none;
        text-align: center;
    }
    .x-region {
        float: none;
        text-align: center;
    }
}

@media (max-width:767px) {
    .foot-contact {
        float: none;
        padding-left: 20px;
    }
    .foot-wechat {
        margin-top: 10px;
        padding-left: 20px;
    }
    .foot-wechat p {
        margin-top: 15px;
    }
}


/* Fade */

.hvr-fade {
    display: inline-block;
    vertical-align: middle;
    -webkit-transform: perspective(1px) translateZ(0);
    transform: perspective(1px) translateZ(0);
    box-shadow: 0 0 1px rgba(0, 0, 0, 0);
    overflow: hidden;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
    -webkit-transition-property: color, background-color;
    transition-property: color, background-color;
}

.hvr-fade:hover,
.hvr-fade:focus,
.hvr-fade:active {
    background-color: #ffb31d;
    color: white;
}

.hvr-fade1 {
    display: inline-block;
    vertical-align: middle;
    -webkit-transform: perspective(1px) translateZ(0);
    transform: perspective(1px) translateZ(0);
    overflow: hidden;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
    -webkit-transition-property: color, background-color;
    transition-property: color, background-color;
}

.hvr-fade1:hover,
.hvr-fade1:focus,
.hvr-fade1:active {
    background-color: #ffb31d;
    color: white;
}


/*------------内页-------------------*/

.left .box {
    margin-bottom: 10px;
}

.left .box h3 {
    line-height: 31px;
    padding-left: 15px;
    font-weight: bold;
    font-family: "Microsoft YaHei";
    background: #00b7ee;
    font-size: 18px;
    color: #fff;
}

.left .box .content {
    padding: 5px 0px;
}

.prodescription {
    border: 1px solid #e5e5e5;
    background: #f9f9f9;
    line-height: 24px;
    padding: 10px;
    margin-bottom: 15px;
    text-indent: 20px;
}

.n_banner {
    width: 100%;
    margin: 0 auto;
}

.n_banner img {
    width: 100%;
    margin: 0 auto
}

.left {
    width: 225px;
    float: left;
}

.sort_menu h3 {
    background-color: #ececec;
    line-height: 28px;
    padding-left: 15px;
    font-weight: bold;
}

.sort_product {
    margin-top: 10px;
}

.sort_product h3 {
    background-color: #ececec;
    line-height: 28px;
    padding-left: 15px;
    font-weight: bold;
}

.n_contact {
    margin-top: 10px;
}

.n_contact h3 {
    background-color: #ececec;
    line-height: 28px;
    padding-left: 15px;
    font-weight: bold;
}

.n_contact .content {
    padding: 5px;
    line-height: 24px;
}

.right {
    width: 914px;
    float: right;
    padding-bottom: 10px;
}

.sitemp {
    line-height: 31px;
    height: 31px;
    overflow: hidden;
    padding-right: 10px;
    background: #00b7ee;
    color: #fff;
}

.sitemp h2 {
    width: 340px;
    float: left;
    line-height: 31px;
    text-align: center;
    text-align: left;
    text-indent: 15px;
    font-size: 14px;
}

.sitemp .site {
    width: 380px;
    float: right;
    text-align: right;
    line-height: 30px;
    color: #fff;
}

.sitemp .site a {
    color: #fff;
}

.right .content {
    padding: 10px;
    padding-top: 15px;
    overflow: hidden;
    line-height: 24px;
}

.sort_album {
    margin-top: 15px;
}

@media (max-width:768px) {
    .news-title-top h2,
    .case-title-top h2 {
        font-size: 26px;
    }
    .news-title-top span,
    .case-title-top span {
        font-size: 24px;
    }
    .news-title-left p,
    .case-title-left p {
        font-size: 20px;
    }
}






/*phone底部导航*/

li {
    list-style: none;
}

.q_d_m {
    float: left;
    width: 100%;
    height: 50px;
}

.pf_down {
    width: 100%;
    float: left;
    position: fixed;
    left: 0;
    bottom: 0;
    height: 50px;
    background: #191919;
    z-index: 999;
    border-top: 1px solid #fff;
}

.pf_down li {
    width: 33.333333%;
    float: left;
    text-align: center;
    padding: 7px 0 4px 0;
    border-right: 1px solid #fff;
}

.pf_down li .ico7 {
    width: 100%;
    float: left;
    height: 20px;
}

.pf_down li .d_name {
    width: 100%;
    float: left;
    margin-top: 4px;
    font-size: 12px;
    color: #fff;
    line-height: 14px;
}

.pf_down li.l1 .ico7 {
    background: url(../images/btn15.png) no-repeat center;
    background-size: 20px 20px;
}

.pf_down li.l2 .ico7 {
    background: url(../images/btn16.png) no-repeat center;
    background-size: 20px 20px;
}

.pf_down li.l3 .ico7 {
    background: url(../images/btn17.png) no-repeat center;
    background-size: 20px 20px;
}

.pf_down li:nth-child(3n) {
    border: none;
}