* {
    margin: 0;
    padding: 0;
}

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

a {
    text-decoration: none;
}

.t1 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
}

.t2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.t3 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.t4 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
}

html {
    overflow-y: scroll;
}

:root {
    overflow-y: auto;
    overflow-x: hidden;
}

:root body {
    position: absolute;
}

body {
    width: 100vw;
    overflow: hidden;
}


.top {
    width: 100%;
    background-color: #fff;
}

.portal {
    width: 100%;
    height: 35px;
    background-color: #333333;
}

.portal_top {
    width: 1200px;
    line-height: 35px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    font-family: MicrosoftYaHei;
    font-size: 12px;
    font-weight: normal;
    font-stretch: normal;
    color: #cccccc;
}

.portal_top a {
    text-decoration: none;
    color: #cccccc;
}

.head {
    width: 1200px;
    margin: 0 auto;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    width: 162px;
    height: 52px;
}

.logo img {
    width: 162px;
    height: 52px;
}

.inp_ss {
    display: flex;
    align-items: center;
}

.search {
    width: 268px;
    height: 38px;
    border-style: none;
    border: 1px solid #F39E1B;
    text-indent: 16px;
    outline: none;
    font-family: MicrosoftYaHeiLight;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
}

::-webkit-input-placeholder {
    /* WebKit browsers */
    color: #cccccc;
}

:-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    color: #cccccc;
}

::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    color: #cccccc;
}

:-ms-input-placeholder {
    /* Internet Explorer 10+ */
    color: #cccccc;
}

.button {
    display: inline-block;
    width: 80px;
    height: 40px;
    line-height: 40px;
    color: #fff;
    background-color: #F39E1B;
    text-decoration: none;
    text-align: center;
    border: 0;
    font-size: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.button img {
    width: 22px;
    height: 20px;
}

.nav {
    width: 100%;
    height: 60px;
    background-color: #F39E1B;
}

.nav_ul {
    display: flex;
    width: 1200px;
    margin: 0 auto;
}

.nav_ul li {
    list-style-type: none;
    width: 142px;
    height: 60px;
    text-align: center;
    line-height: 60px;
}

.nav_ul li a {
    display: inline-block;
    width: 142px;
    height: 60px;
    text-decoration: none;
    color: #fff;
    font-family: MicrosoftYaHei;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
}

.nav_ul .active a{
    background-color: #FDB039;
}

.active a {
    background-color: #F39E1B;
}