main.css

*, *:before, *:after {
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
}

body {
    font-size: 16px;
    font-size: 1.6rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    color: #313a3d;
    width: 100%;
    margin: 0 auto;
    padding: 0 16px;
    line-height: 1.6;
    overflow-wrap: break-word;
}

header#banner {
    margin: 25px 0;
}

header#banner a {
    color: #313a3d;
    text-decoration: none;
}

header#banner a:hover {
    text-decoration: underline;
}

header#banner h2 {
    display: inline;
    font-size: 21px;
    font-size: 2.1rem;
    margin: 0 8px 0 0;
}

header#banner nav {
    display: inline-block;
}

header#banner nav ul {
    list-style-type: none;
    font-size: 1.05em;
    text-transform: lowercase;
    margin: 0;
    padding: 0;
}

header#banner nav ul li {
    display: inline;
    margin: 0 3px;
}

header#banner nav ul li a {
    color: #454545;
}

main#content a {
    color: #007dfa;
    text-decoration: none;
}

main#content a:hover {
    text-decoration: underline;
}

main#content h1,
main#content h2,
main#content h3,
main#content h4,
main#content h5,
main#content h6 {
    margin-bottom: 0;
    line-height: 1.15;
}

main#content h3 {
    font-size: 19px;
    font-size: 1.9rem;
}

main#content h1 + p,
main#content h2 + p,
main#content h3 + p,
main#content h4 + p,
main#content h5 + p,
main#content h6 + p {
    margin-top: 5px;
}

main#content p {
    color: #394548;
    margin: 16px 0;
}

main#content hr {
    height: 1px;
    border: 0;
    background: #d8d8d8;
}

main#content abbr {
    cursor: help;
}

/* index.html styles */
main#content ul#posts {
    list-style-type: none;
    font-size: 16px;
    font-size: 1.6rem;
    margin-top: 0;
    padding: 0;
}

main#content ul#posts li {
    margin: 5px 0;
    padding: 0;
}

main#content ul#posts small {
    font-size: 0.8em;
    color: #767676;
    margin-left: 10px;
}

main#content ul#posts li a {
    text-decoration: none;
}

main#content ul#posts li a:hover {
    color: #369aff;
}

main#content ul#posts li a:hover small {
    color: inherit;
}

/* single.html styles */
main#content header#post-header h1 {
    display: block;
    font-size: 23px;
    font-size: 2.3rem;
    font-weight: 600;
    line-height: 1.15;
}

main#content header#post-header > div {
    display: block;
    font-size: 0.85em;
    color: #767676;
}

main#content #toc {
    border: 1px solid #b1b1b1;
    border-radius: 1px;
    line-height: 26px;
    margin: 16px 0;
    padding: 9px 14px;
}

main#content #toc h4 {
    font-size: 1.06em;
    color: #3d3d3d;
    margin: 0;
}

main#content #toc nav#TableOfContents {
    margin-top: 4px;
}

main#content #toc nav#TableOfContents > ul, main#content #toc nav#TableOfContents > ol {
    margin-left: -40px;
}

main#content #toc ul, main#content #toc ol {
    font-size: 0.98em;
    margin: 0;
    padding: 0 0 0 40px;
}

main#content #toc ul {
    list-style-type: none;
}

main#content #toc ol {
    counter-reset: item;
}

main#content #toc ol li {
    display: block;
}

main#content #toc ol li:before {
    content: counters(item, ".") ". ";
    counter-increment: item;
}

main#content img {
    max-width: 100%;
    margin: 0 auto;
}

main#content figure {
    margin: 16px 0;
}

main#content figure img {
    display: block;
    max-width: 100%;
    margin: 0 auto;
}

main#content figure figcaption {
    font-size: 0.92em;
    font-style: italic;
    line-height: 22px;
    text-align: center;
    margin-top: 6px;
    padding: 0 10px;
}

main#content figure figcaption h4 {
    font-style: normal;
    display: inline;
    margin: 0;
}

main#content figure figcaption p {
    display: inline;
    margin: 0;
    padding-left: 8px;
}

main#content blockquote {
    font-style: italic;
    margin-top: 10px;
    margin-bottom: 10px;
    margin-left: 50px;
    padding-left: 15px;
    border-left: 3px solid #ccc;
}

main#content code,
main#content pre {
    font-family: 'Menlo', monospace;
}

main#content code {
    font-size: 0.96em;
    padding: 0 5px;
}

main#content pre {
    display: block;
    overflow-x: auto;
    font-size: 14px;
    font-size: 1.4rem;
    white-space: pre;
    margin: 20px 0;
    padding: 1.5rem 1.5rem;
    line-height: 1.4;
}

main#content pre code {
    padding: 0;
}

main#content .footnotes {
    font-size: 0.9em;
}

footer#footer {
    font-size: 14px;
    font-size: 1.4rem;
    font-weight: 400;
    color: #b3b3b3;
    margin: 40px 0;
}