body, ol, ul, h1, h2, h3, h4, h5, h6, p,th, td, dl, dd,
form, fieldset, legend, input, textarea, select {
    margin: 0;
    padding: 0;
}
*,
*:before,
*:after,
*::before,
*::after {
    box-sizing: border-box;
}
ul {list-style: none;padding: 0;margin: 0;}
a {text-decoration: none;cursor: pointer;}
em,i {font-style: normal;}
body {
    font-size: 14px;
    color: #333;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: #f5f5f5;
}
.g-main {
    width: 1200px;
    margin: 25px auto;
    overflow: hidden;
}
.left-nav {
    float: left;
    width: 254px;
    background: #fff;
}
.left-nav > ul > li {
    position: relative;
    width: 100%;
    height: 95px;
}
.left-nav > ul > li.active,
.left-nav > ul > li:hover {
    border-right: 3px solid #18191E;
}
.left-nav > ul > li a {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    padding: 27px 0 0 82px;
    text-decoration: none;
}
.left-nav > ul > li a span {
    display: block;
}
.left-nav > ul > li a .name {
    font-size: 20px;
    font-weight: bold;
    color: #333;
}
.left-nav > ul > li a .english {
    font-size: 14px;
    color: #C7C7C9;
    line-height: 20px;
}
.left-nav > ul > li:nth-child(1) {
    background: url("../img/01.png") 20px center no-repeat;
    border-bottom: 1px solid #EBEBEB;
}
.left-nav > ul > li:nth-child(2) {
    background: url("../img/02.png") 20px center no-repeat;
    border-bottom: 1px solid #EBEBEB;
}
.left-nav > ul > li:nth-child(3) {
    background: url("../img/03.png") 20px center no-repeat;
}
.right-content {
    float: right;
    width: 922px;
    padding: 0 30px 20px 30px;
    background: url("../img/04.png") 10px 20px no-repeat, #fff;
    min-height: 450px
}
.right-content .title {
    position: relative;
    width: 100%;
    height: 71px;
    line-height: 71px;
    font-size: 20px;
    color: #2069D8;
    border-bottom: 1px solid #EBEBEB;
}
.right-content .title:after {
    position: absolute;
    left: 0;
    bottom: -1px;
    content: "";
    width: 38px;
    height: 2px;
    background: #2069D8;
}
.right-content .problems-list > ul > li {
    position: relative;
    width: 100%;
    padding: 21px 100px 21px 0;
    border-bottom: 1px solid #EFEFEF;
}
.right-content .problems-list > ul > li:last-child {
    border: none;
}
.right-content .problems-list > ul > li .ask {
    font-size: 14px;
    color: #333333;
    line-height: 24px;
}
.right-content .problems-list > ul > li .answer {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 14px;
    color: #999999;
    line-height: 24px;
}
.right-content .problems-list > ul > li .look {
    position: absolute;
    right: 0;
    bottom: 21px;
    width: 90px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    color: #4271F1;
    border-radius: 15px;
    border: 1px solid #4271F1;
    cursor: pointer;
}
.right-content .problems-list .problem-ask {
    text-align: center;
    color: #2069D8;
    line-height: 50px;
}
.right-content .problems-list .problem-answer {
    width: 100%;
    padding: 0 25px;
    font-size: 14px;
    color: #666666;
    line-height: 24px;
}
.right-content .problems-list .return {
    position: relative;
    margin: 30px auto 0 auto;
    width: 80px;
    height: 30px;
    line-height: 30px;
    border: 1px solid #208eff;
    border-radius: 4px;
    background: url("../img/return.png") 12px center no-repeat, #ecf5ff;
}
.right-content .problems-list .return a {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    padding-left: 35px;
    color: #0b6bcd;
}
.right-content .fingerpost {
    padding: 24px 8px;
}
.right-content .fingerpost img {
    display: inline-block;
    vertical-align: top;
}
.right-content .fingerpost .guide {
    width: 400px;
    margin-left: 10px;
    display: inline-block;
    vertical-align: top;
    color: #333;
    font-size: 14px;
}
.right-content .fingerpost .guide p {
    line-height: 24px;
}