.exp-content .exp-container {
    background: #fff;
    height: 100%;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
}

/* 左选择栏 */

.exp-content .exp-container .content-l {
    width: 21%;
    height: 100%;
    overflow: hidden;
    display: inline;
    position: absolute;
    top: 0;
    left: 0;
}

.exp-container .content-l dl {
    padding-bottom: 40px;
}

.exp-container .content-l dt {
    margin: 52px 0 20px 0;
    padding-left: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.exp-container .content-l dd {
    padding: 20px 70px;
    position: relative;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
}

.exp-container .content-l dd::before {
    content: "";
    position: absolute;
    width: 60%;
    height: 2px;
    opacity: 0.1;
    bottom: 0;
    left: 70px;
    transform: scaleY(0.5);
    transform-origin: 0 0;
}

.exp-container .content-l .on {
    margin-top: -2px;
}

/*.exp-container .content-l .on::before {
    content: "";
    position: absolute;
    width:5px;
    height:100%;
    opacity:1;
    top:0;
    left:0;
    transform: scaleY(1);
    transform-origin:0;
}*/

/*.exp-container .content-l .on::after {
    content: "";
    width: 20px;
    height: 12px;
    position: absolute;
    top:0;
    right: 46px;
    bottom:0;
    margin:auto;
    background-size:100%;
    opacity:1;
}*/

/* 内容栏 */

.exp-content .exp-container .content-r {
    width: 79%;
    height: auto;
    float: right;
    padding: 20px 40px;
    box-sizing: border-box;
}

.content-r p {
    margin-bottom: 10px;
}

.opt-btn {
    padding: 8px;
    color: #d9eef7 !important;
    border: solid 1px #0076a3;
    background: #3488EA;
    background: -webkit-gradient(linear, left top, left bottom, from(#00adee), to(#3488EA));
    background: -moz-linear-gradient(top, #00adee, #3488EA);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00adee', endColorstr='#3488EA');
    outline: none;
    cursor: pointer;
    text-decoration: none !important;
    text-shadow: 0 1px 1px rgba(0, 0, 0, .3);
    -webkit-border-radius: .5em;
    -moz-border-radius: .5em;
    border-radius: .5em;
    -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, .2);
    -moz-box-shadow: 0 1px 2px rgba(0, 0, 0, .2);
    box-shadow: 0 1px 2px rgba(0, 0, 0, .2);
}

.opt-btn:hover {
    background: #0E71E2;
    background: -webkit-gradient(linear, left top, left bottom, from(#0095cc), to(#0E71E2));
    background: -moz-linear-gradient(top, #0095cc, #0E71E2);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#0095cc', endColorstr='#0E71E2');
}