body {
    margin: 0;
    font-family: Roboto, Noto Sans SC, PingFang SC, Lantinghei SC, Microsoft Yahei, Hiragino Sans GB, "Microsoft Sans Serif", WenQuanYi Micro Hei, sans-serif;
    word-wrap: break-word;
}

mdui-layout {
    height: 100vh;
}

mdui-layout-main {
    position: relative;
    height: 100%;
    overflow: hidden;
}

mdui-top-app-bar {
    position: absolute;
    top: 0px;
    right: 0px;
    left: 0px;
}

mdui-navigation-drawer {
    position: absolute;
    top: 64px;
    bottom: 0px;
    left: 0px;
}

#collapse {
    margin: 12px 0;
    overflow-y: auto;
    max-height: calc(100% - 64px - 12px);
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 1.25em;
    font-weight: 400;
}

h1 {
    font-size: 2.5em;
    line-height: 1.2;
}

h2 {
    font-size: 1.875em;
    line-height: 1.3;
}