.nav a:first-of-type {
    background-color: #fff;
    color: #333;
}

.nav a:first-of-type:hover {
    background-color: #FF6600;
    color: #fff;
}

.p_container {
    width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
    padding-left: 16px;
    position: relative;
    min-height: 950px;
}

.bg_gray {
    background: #F6F6F6;
}

.nav_css {
    background: #FFF;
    width: 170px;
    /*height: 345px;*/
    font-size: 18px;
    font-family: MicrosoftYaHei;
    font-weight: 400;
    color: rgba(0, 0, 0, 1);
    padding: 25px 0;
    /*padding: 5px 10px;*/
}

.nav_css ul li {
    line-height: 45.5px;
    padding: 0 0 0 30px;
}

.nav_css ul li a {
    color: #000;
}

.nav_css .jy_border-left {
    border-left: 5px solid #FF6600;
    padding-left: 25px;
}

.section {
    width: 990px;
    min-height: 100%;
    background: #FFF;
    margin-left: 10px;
    min-height: 950px;
    padding-top: 40px;
}

.section_solid {
    border-left: 4px solid #FF6600;
    padding-left: 5px;
    margin-top: 32px;
}

.p_title {
    font-size: 24px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    color: rgba(255, 102, 0, 1);
    text-align: center;
}

.jy_inline {
    display: inline-block;
}

.jy_fl {
    float: left;
}

.p_container_body {
    padding: 30px 0
}

.trapezoidal {
    font-size: 30px;
    display: block;
    color: #ff6600;
    height: 0;
    width: 120px;
    line-height: 40px;
    padding-left: 5px;
    border-width: 0px 40px 40px 0px;
    border-style: none solid solid;
    border-color: transparent transparent #FFD7BD;
    text-align: center;
    border-radius: 0;
    font-size: 20px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
}

.p_content {
    text-indent: 2em;
    padding: 15px 30px 30px 30px;
    line-height: 28px;
}

.p_content p {
    margin: 0
}

.p_content .item {
    margin: 15px 0 6px 0;
}

.p_content .item .item_title {
    text-indent: 0em;
    font-size: 18px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    color: rgba(255, 102, 0, 1);
}

.p_content .item .item_content {
    padding-bottom: 20px;
}

.p_content .item .item_content p {
    margin-top: 10px
}

.item_content ul {
    margin-left: 25px;
}

.color_orange {
    color: #FF6600
}

.p_item_hidden {
    display: none
}

html,
body {
    height: 100%
}