.main {
    background: #f2f2f2;
    max-width: 1100px;
    padding: 30px;
}
.main .left {
    width: 240px;
}
.main .right {
    width: 76%;
    padding-bottom: 20px;
    background: white;
    min-height: 600px;
}
.main .list {
    background: white;
    padding: 13px;
}
.main .left .icon {
    width: 53px;
    vertical-align: bottom;
    height: 49px;
    display: inline-block;
}
.left > li {
    margin-bottom: 20px;
}
.left > li a:hover {
    background: rgb(45,102,165);
    color: white;
}

.left > li > a.selected {
    background: #2d66a5;
    color: white;
}

.left a span {
    font-size: 18px;
    display: inline-block;
    width: 72px;
    margin-left: 16px;
    height: 35px;
}

.left a {
    display: block;
    padding: 10px 20px;
    background: white;
    position: relative;
}
.left .has-children::after {
    content: '+';
    position: absolute;
    right: 10px;
    font-weight: 100;
}
.left > li > a.has-children::after {
    top: 4px;
    font-size: 40px;
}
.left .fold::after {
    content: '-';
}
.children li {
    margin-top: 10px;
}
.children a {
    height: 36px;
    padding: 0;
    line-height: 36px;
    font-size: 16px;
    background: #e5e5e5;
    text-indent: 10%;
}
.children a.selected {
    color: #2e65a6;
}