README.style.html #1

<style>
  :root {
    color: #1f2933;
    background: #eef3f6;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
  }

  body {
    box-sizing: border-box;
    max-width: 58rem;
    margin: 2.5rem auto;
    padding: 3rem clamp(1.5rem, 5vw, 4.5rem);
    background: #ffffff;
    border-top: 5px solid #4b778d;
    box-shadow: 0 0.75rem 2.5rem rgb(31 41 51 / 12%);
  }

  h1, h2, h3 {
    color: #173f52;
    line-height: 1.2;
  }

  h1 {
    margin-top: 0;
    padding-bottom: 0.7rem;
    border-bottom: 1px solid #d6e1e6;
    font-size: 2.4rem;
  }

  h2 {
    margin-top: 2.4rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid #d6e1e6;
    font-size: 1.55rem;
  }

  h3 {
    margin-top: 1.8rem;
    font-size: 1.2rem;
  }

  a, a:visited {
    color: #0d6b85;
  }

  a:hover {
    color: #a74725;
  }

  #TOC {
    margin: 2rem 0;
    padding: 1.25rem 1.5rem;
    background: #f3f7f8;
    border-left: 4px solid #4b778d;
  }

  #TOC > ul { margin-bottom: 0; }
  #TOC li { margin: 0.3rem 0; }

  code {
    padding: 0.1em 0.3em;
    background: #edf2f4;
    border-radius: 3px;
    color: #173f52;
  }

  pre {
    padding: 1rem 1.2rem;
    background: #edf2f4;
    border-left: 4px solid #4b778d;
    border-radius: 4px;
    box-shadow: inset 0 0 0 1px #d6e1e6;
  }

  pre code {
    padding: 0;
    background: transparent;
    color: #1f2933;
  }

  pre code.sourceCode > span { color: #1f2933; }
  pre code.sourceCode span.cf,
  pre code.sourceCode span.im,
  pre code.sourceCode span.kw,
  pre code.sourceCode span.ot { color: #18753d; }
  pre code.sourceCode span.ch,
  pre code.sourceCode span.sc,
  pre code.sourceCode span.st,
  pre code.sourceCode span.vs { color: #a55310; }
  pre code.sourceCode span.co,
  pre code.sourceCode span.cv { color: #4d6572; }
  pre code.sourceCode span.fu,
  pre code.sourceCode span.va { color: #155f87; }
  pre code.sourceCode span.op { color: #445761; }

  img {
    display: block;
    margin: 1.5rem auto;
    border: 1px solid #d6e1e6;
    box-shadow: 0 0.4rem 1.2rem rgb(31 41 51 / 14%);
  }

  @media (max-width: 600px) {
    body {
      margin: 0;
      padding: 1.5rem;
      box-shadow: none;
    }

    h1 { font-size: 2rem; }
  }

  @media print {
    :root { background: #ffffff; }
    body {
      max-width: none;
      margin: 0;
      padding: 0;
      border: 0;
      box-shadow: none;
    }
  }
</style>