#page>main>#sidebar-panel {
    flex-shrink: 0;
    min-width: 300px;
    max-width: 350px;
    width: 20vw;
    background-color: rgba(255, 255, 255, 1);
    border-right: 1px solid #e9eaeb;
    flex-direction: column;
    box-sizing: border-box;
}

#page>main>#sidebar-panel.sticky {
    position: fixed;
    top: 0px;
    overflow-y: auto;
    height: 100vh;
}

#page>main>#sidebar-panel .header,
#page>main>#sidebar-panel .header *,
#page>main>#sidebar-panel .title {
    display: flex;
    align-items: center;
    letter-spacing: 1px;
}

#page>main>#sidebar-panel .header,
#page>main>#sidebar-panel .header * {
    justify-content: center;
}

#page>main>#sidebar-panel .header {
    height: 36px;
    background-color: #f7f7f7;
    border-bottom: 1px solid #e9eaeb;
    /* items主轴对齐方式:左右两边对齐 */
    justify-content: space-between;
}


/* 侧边栏头部分&主内容面板上部分:侧边栏面板控制器 */

#page>main .sidebar-panel-controller {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888888;
    font-size: 1em;
    font-weight: 700;
    width: 32px;
    height: 26px;
    background-color: #e3e3e3;
    border-left: 6px solid #bbb;
    /* 外边距 */
    margin: 5px 0px 5px 10px;
    /* 边框盒子模型 */
    box-sizing: border-box;
    cursor: pointer;
}

#page>main .sidebar-panel-controller:hover {
    color: #555555;
}

#page>main>#sidebar-panel .header #list-controller a {
    color: #888888;
    font-size: 2em;
    font-weight: 700;
    width: 25px;
    height: 25px;
    margin-right: 8px;
}

#page>main>#sidebar-panel .header #list-controller a:hover {
    color: #555555;
}

#page>main>#sidebar-panel .title svg {
    height: 24px;
    width: 24px;
    margin-right: 4px;
}

#page>main>#sidebar-panel #list-of-content {
    margin: 30px 25px 30px 45px;
}

#page>main>#sidebar-panel #list-of-content span {
    font-size: 110%;
}

#page>main>#sidebar-panel #list-of-content hr {
    margin-top: 10px;
    margin-bottom: 10px;
    color: #555;
    background-color: #e9eaeb;
    height: 1px;
    border: 0;
}

#page>main>#sidebar-panel #list-of-content .content ul {
    padding-left: 9%;
}

#page>main>#sidebar-panel #list-of-content .content li {
    line-height: 2;
}

#page>main>#sidebar-panel #list-of-content .content a:hover {
    text-decoration: underline;
}

#page>main>#sidebar-panel #list-of-content .content a.current {
    font-weight: 700;
}

#page>main>#sidebar-panel .box .title {
    height: 35px;
    background-color: #f7f7f7;
    border-top: 1px solid #e9eaeb;
    border-bottom: 1px solid #e9eaeb;
    /* 边框盒子模型 */
    box-sizing: border-box;
}

#page>main>#sidebar-panel .box .title svg {
    margin-left: 20px;
    margin-right: 6px;
    fill: #666;
}

#page>main>#sidebar-panel .box .title span {
    color: #666;
}

#page>main>#sidebar-panel .box .title:hover,
#page>main>#sidebar-panel .box .title:hover * {
    cursor: pointer;
    background-color: #3e78a6;
}

#page>main>#sidebar-panel .box .title:hover>svg {
    fill: #fff;
}

#page>main>#sidebar-panel .box .title:hover>span {
    color: #fff;
}

#page>main>#sidebar-panel .box .content {
    margin: 20px 30px 20px 45px;
    line-height: 1.7;
}

#page>main>#sidebar-panel .box .content>a:hover {
    text-decoration: underline;
}