html {
    box-sizing: border-box;
}
*, *:before, *:after {
    box-sizing: inherit;
}
body, #root {
    height: 100vh;
    max-height: 100vh;
    min-height: 100vh;
    width: 100vw;
    max-width: 100vw;
    min-width: 100vw;
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: "WenQuanYi Micro Hei", STXihei;
}
#root {
    display: flex;
    flex-flow: column nowrap;
    align-items: stretch;
}
#header {
    margin-top: 0;
    margin-bottom: auto;
}
#language-switcher {
    position: absolute;
    top: 0.5rem;
    right: 1rem;
    z-index: 2;
    font-size: 0.85rem;
}
#language-switcher .language-option {
    margin-left: 0.4rem;
    text-decoration: none;
    color: #888;
}
#language-switcher a.language-option:hover {
    text-decoration: underline;
}
#language-switcher .language-current {
    color: #000;
    font-weight: bold;
}
#content {
    display: flex;
    flex-grow: 1;
    flex-flow: column nowrap;
    justify-content: center;
}
#footer {
    margin-top: auto;
    margin-bottom: 0;
    height: 30px;
}
p {
    margin: 0;
}
#messages-panel {
    position: absolute;
    width: 100vw;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1;
}
#messages-panel .alert {
    margin: 0.5rem 1rem;
}