body {
    box-sizing: border-box;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}
.left-sidebar,
.article-content {
    box-sizing: border-box;
    min-width: 0;
    overflow-wrap: anywhere;
}
.left-sidebar {
    float: left;
    width: 20%;
    padding-right: 20px;
}
.left-sidebar a {
    display: block;
    min-height: 24px;
}
.article-content {
    float: left;
    width: 80%;
    font-size: 18px;
    line-height: 1.55;
}
.article-content h1 {
    font-size: 1.6em;
    line-height: 1.25;
}
.article-content img {
    max-width: 100%;
    height: auto !important;
}
.article-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
}
@media print {
    .left-sidebar {
        display: none;
    }
    .article-content {
        float: none;
        width: 100%;
    }
}