:root {
    /* Change link's style */
    --link-color: var(--theme-color);
    --link-text-decoration: none;
    /* Change navbar's style*/
    --sidebar-nav-pagelink-background-image: none;
    --sidebar-nav-link-before-content-l3: none;

}

/* Fix sidebar fold arrow */
.sidebar-nav li>a[href^='#/']:not([href*='?id=']):not(:only-child) {
    background-image: var(--sidebar-nav-pagelink-background-image--collapse,
            var(--sidebar-nav-pagelink-background-image--loaded,
                var(--sidebar-nav-pagelink-background-image)));
    background-position: var(--sidebar-nav-pagelink-background-position--collapse,
            var(--sidebar-nav-pagelink-background-position--loaded,
                var(--sidebar-nav-pagelink-background-image)));
}

.sidebar-nav li.open>a[href^='#/']:not([href*='?id=']):not(:only-child) {
    background-image: var(--sidebar-nav-pagelink-background-image--active,
            var(--sidebar-nav-pagelink-background-image--loaded,
                var(--sidebar-nav-pagelink-background-image)));
    background-position: var(--sidebar-nav-pagelink-background-position--active,
            var(--sidebar-nav-pagelink-background-position--loaded,
                var(--sidebar-nav-pagelink-background-image)));
}

.markdown-section {
    border: 1px solid deepskyblue;
    margin-top: 60px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.app-nav {
    font-size: 21px;
}

.dropdown {
    position: relative;
    display: inline-block;

}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: rgba(255, 255, 255, 0.9);
}

.goodlink {
    text-decoration: none;
    color: black;
    line-height: 50px;
    display: block;

}

.goodlink:hover {
    color: deepskyblue;
    background-color: rgba(255, 255, 255, 0.9);
}


.buttonsize {
    width: 180px;
    line-height: 50px;
}

.buttonitem {
    display: inline-block;
    text-align: center;
}

.headercenter {
    width: 100%;
    display: flex;
    justify-content: center;
}

.header {
    font-size: 21px;
    position: fixed;
    height: 50px;
    box-shadow: 0 0 4px 1px gray;
    z-index: 100;
    background-color: #ffffff80;
    backdrop-filter: blur(4px);
}

.backgroud {
    /* background-image: url("./luna.jpg"); */
    background-size: 100% auto;
    content: '';
    opacity: 0.33;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
}

.xiamian {
    position: fixed;
    left: 0;
    right: 0;
    top: 60px;
    bottom: 0;
    overflow-x: auto;
    overflow-y: auto;
}

.buttons {
    align-items: center;
    display: flex;
    justify-content: center;

    white-space: nowrap;

}

main{ 
    min-height: 0vh; 
}

main .markdown-section{
    display: none;
}