body {
    font-family: 'Open Sans', sans-serif;
    color: rgba(0, 0, 0, 0.87);
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

img {
    width: 100%
}

h1 {
    font-size: 2rem;
    font-weight: normal;
}

h2 {
    margin: 0.8rem 0 0.4rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.3);
    font-weight: normal;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

li {
    padding: 0.2em 0;
    font-weight: 500;
}

a {
    color: #0d6efd;
}

.alert {
    position: relative;
    padding: .75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

.outer {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#toc {
    max-width: 320px;
    min-width: 240px;
    width: 30%;
    height: 100%;

    box-sizing: border-box;
    padding: 16px;
    overflow: auto;

    background-color: rgba(0, 0, 0, 0.05);
    box-shadow: 3px 0 3px rgba(0, 0, 0, 0.08);
}

@media (max-width: 800px) {
    #toc {
        display: none;
    }
}

#toc h1 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 1rem;
}

#toc img {
    width: 200px;
    /* specify min-height so the browser knows the height in advance */
    min-height: 59px;
}

#toc input {
    width: calc(100% - 0.5rem);
    height: 28px;
}

#toc .branding {
    display: flex;
    flex-flow: column;
    align-items: center;
}

#content {
    flex: 1;
    padding: 0 16px;
}

#content main {
    max-width: 768px;
    margin: auto auto;
}

.elevation-required {
    font-style: italic;
    font-weight: bolder;
}