body {
    max-width: 42em;
    margin: 0 auto;
    padding: 0 1em 0;
    font-family: "Noto Sans", -apple-system, BlinkMacSystemFont, helvetica neue, helvetica, Cantarell, Ubuntu, roboto, arial, sans-serif;
    font-size: 12pt;
}
aside {
    border-style: solid    ;
    padding: 0 1em 0;
}
figure figcaption {
    text-align: end;
    font-style: italic;
}
img { width: 100%; }
a { text-decoration: none; }
.equation { /* Center mathematical equations */
    text-align: center;
    font-size: 14pt;
}
table { /* Center tables */
    margin: 0 auto;
    border-collapse: collapse;
    width: 80%
}
thead, td { /* Add borders */
    border-bottom: 1px solid;
}