body {
    background-color: #fafafa;
}

.forum-group .content {
    padding: 10px 0 0 25px;
    min-height: 250px;
    background-color: white;
}

.forum-group .content img {
    max-width: 100%;
}

.forum-group .content .title {
    font-size: 30px;
}

.forum-group .content {
    flex: 1;
}

.forum-group .content .forum {
    max-width: 1024px;
}

.forum-group .side-nav {
    padding: 15px;
    width: 260px;
    background-color: white;
    border-right: 1px solid #eee;
}

.forum-group .side-nav h3 {
    color: #333;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
}

.forum-group .side-nav li {
    padding-left: 10px;
}

.forum-group .side-nav .list {
    color: #666;
    cursor: pointer;
    font-size: 14px;
}

.side-nav .list p {
    padding-top: 10px;
    padding-bottom: 10px;
    padding-right: 10px;
    border-radius: 4px;
}

.side-nav .list p:hover,
.side-nav .list a:hover {
    background-color: #fafafa;
    color: #333;
}

.side-nav .list p:not(.collapsed) > i {
    transform: rotate(-180deg);
}

.side-nav .article.active,
.side-nav .article.active a{
    color: #ff6600 !important;
    background-color: #FFF5EE !important;
}

.side-nav .article a {
    color: inherit;
    display: block;
}

.search-group {
    width: 1020px;
    margin: 0 auto;
    padding-top: 10px;
    text-align: right;
}

.search-group .search {
    position: relative;
    display: inline-block;
    width: 300px;
}

.search-group .search i {
    position: absolute;
    font-size: 16px;
    right: 10px;
    top: 12px;
    color: #999;
    cursor: pointer;
}

.search-group .search .input__inner {
    -webkit-appearance: none;
    background-color: #fff;
    background-image: none;
    border-radius: 4px;
    border: 1px solid #dcdfe6;
    box-sizing: border-box;
    color: #606266;
    display: inline-block;
    font-size: inherit;
    height: 40px;
    line-height: 40px;
    outline: 0;
    padding: 0 15px;
    transition: border-color .2s cubic-bezier(.645, .045, .355, 1);
    width: 100%;
}

.top-ranking {
    padding: 10px;
    margin: 0 auto 20px auto;
    background-color: #FAFAFA;
    box-sizing: border-box;
}

.top-ranking h3 {
    margin-top: 5px;
    margin-bottom: 8px;
    font-size: 18px;
}

.top-ranking ul {
    display: block;
    overflow: auto;
    padding-left: 20px;
    list-style: disc;
    color: #ff6600;
}

.top-ranking ul li {
    float: left;
    width: 33%;
    font-size: 16px;
    margin-bottom: 4px;
}

.top-ranking ul li a {
    color: #333;
}

.top-ranking ul li a:hover {
    color: #ff6600;
}