body, html {
    height: 100%
}

button {
    cursor: pointer;
    border: none;
}

body {
    line-height: 24px;
    font-size: 14px;
    font-style: normal;
    font-weight: 400;
    color: #505050;
    min-width: 1200px
}

h1, h2, h3, h4, h5, h6 {
    color: #4a4a4a;
    font-weight: 700;
    margin: 0
}

p:last-child {
    margin-bottom: 0
}

a, button {
    color: inherit;
    line-height: inherit;
    text-decoration: none
}

:after, :before, a, button, i, img, input, span {
    -webkit-transition: all .3s ease 0s;
    transition: all .3s ease 0s
}

:focus {
    outline: 0 solid
}

a:focus {
    color: inherit;
    outline: medium none;
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    text-decoration: none
}

a:hover {
    text-decoration: none
}

ul {
    list-style: outside none none;
    margin: 0;
    padding: 0
}

.fix {
    overflow: hidden
}

.por {
    position: relative
}

.clear {
    clear: both
}

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

.fl {
    float: left
}

.fr {
    float: right
}

.coll {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    -webkit-box-flex: 0;
    -ms-flex-positive: 0;
    flex-grow: 0
}

.coll2 {
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-all
}

.tc {
    text-align: center
}

li {
    list-style: none
}

body, html {
    position: relative
}

body {
    background: #fff;
    font-family: PingFang SC, MicrosoftYaHei, Helvetica Neue, Helvetica, Arial, Microsoft YaHei, "\5FAE\8F6F\96C5\9ED1", STHeitiSC-Light, simsun, "\5B8B\4F53", WenQuanYi Zen Hei, WenQuanYi Micro Hei, sans-serif;
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0
}

.content {
    width: 1280px;
    margin: 0 auto
}

.header_box {
    height: 100px
}

.logo {
    float: left
}

.logo img {
    float: left;
    padding-top: 25px
}

.logo h1 {
    padding-top: 19px;
    font-size: 20px;
    font-family: MicrosoftYaHei;
    font-weight: 700;
    color: #069191;
    line-height: 32px;
    letter-spacing: 6px
}

.logo h1 span {
    display: block;
    font-size: 10px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #069191;
    line-height: 22px;
    letter-spacing: 0
}

.nav {
    float: right;
    padding-top: 34px
}

.nav a {
    font-size: 16px;
    font-family: Microsoft YaHei;
    display: inline-block;
    font-weight: 400;
    color: #222;
    line-height: 34px;
    padding: 0 0 0 20px;
    margin-left: 40px;
    background-image: url(../images/nav_1.png);
    background-position: 0 center;
    background-repeat: no-repeat;
    /*background-size: 15px auto;*/
}

.nav a.open, .nav a:hover {
    color: #069191;
    background-image: url(../images/nav_1_open.png);
    border-bottom: 2px solid #069191
}

.nav a:nth-child(2) {
    background-image: url(../images/nav_2.png)
}

.nav a:nth-child(2).open, .nav a:nth-child(2):hover {
    background-image: url(../images/nav_2_open.png)
}

.nav a:nth-child(3) {
    background-image: url(../images/nav_3.png)
}

.nav a:nth-child(3).open, .nav a:nth-child(3):hover {
    background-image: url(../images/nav_3_open.png)
}

.nav a:nth-child(4) {
    background-image: url(../images/nav_4.png)
}

.nav a:nth-child(4).open, .nav a:nth-child(4):hover {
    background-image: url(../images/nav_4_open.png)
}

.nav a:nth-child(5) {
    background-image: url(../images/nav_5.png)
}

.nav a:nth-child(5).open, .nav a:nth-child(5):hover {
    background-image: url(../images/nav_5_open.png)
}

.nav a:nth-child(6) {
    background-image: url(../images/nav_6.png)
}

.nav a:nth-child(6).open, .nav a:nth-child(6):hover {
    background-image: url(../images/nav_6_open.png)
}

.nav a:nth-child(7), .nav a:nth-child(8) {
    font-size: 12px;
    padding: 0 10px;
    margin: 0;
    background-image: none
}

.nav a:nth-child(7).open, .nav a:nth-child(7):hover, .nav a:nth-child(8).open, .nav a:nth-child(8):hover {
    background-image: none;
    border: none
}

.footer {
    background-color: #069191
}

.footer .content {
    padding-top: 50px;
    padding-bottom: 50px;
}

.footer .content > li {
    padding-left: 62px;
    float: left;
    font-size: 16px;
    font-weight: 700;
    color: #fbfbfb
}

.footer .content > li.big {
    width: 420px
}

.footer .content > li.big > ul {
    padding: 0
}

.footer .content > li.big .big_li {
    float: left;
    font-size: 16px;
    font-weight: 700;
    color: #fbfbfb;
    padding-bottom: 28px
}

.footer .content > li ul {
    padding-top: 15px
}

.footer .content > li li {
    font-size: 14px;
    font-size: 14px;
    font-weight: 400;
    color: #fbfbfb;
    line-height: 28px
}

.footer_page {
    border-top: 1px solid #fff;
    text-align: center;
    background-color: #069191;
    color: #fff;
    line-height: 65px
}

.bit_title {
    text-align: center;
    font-size: 30px;
    font-family: MicrosoftYaHei;
    font-weight: 700;
    color: #333;
    line-height: 48px
}

.bit_title span {
    margin-bottom: 10px;
    border-bottom: 2px solid #069191;
    line-height: 48px;
    display: inline-block;
    font-size: 26px
}

.w2000 {
    background-position: center bottom;
    background-repeat: no-repeat
}
.title_img img{
    display: block;
    margin: 0 auto;
}