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CSS

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HTML 

              
                <style>
/* Styles just for this documentation page */
  :root{
    /* Thank you modernfontstacks.com */
    font-family: ui-rounded, 'Hiragino Maru Gothic ProN', Quicksand, Comfortaa, Manjari, 'Arial Rounded MT', 'Arial Rounded MT Bold', Calibri, source-sans-pro, sans-serif;
font-weight: normal;
    font-size: 1.5rem;
    color: #222;
  }
  
  body{
    max-width: 80ch;
  }
  
  h1,h2,h3{
    border-block-end: 0.2em solid currentcolor;
    border-block-end-color: accentcolor;
  }
  
  strong{
    font-family: Superclarendon, 'Bookman Old Style', 'URW Bookman', 'URW Bookman L', 'Georgia Pro', Georgia, serif;
font-weight: bold;
  }
  
  code{
    font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;
font-weight: bold;
  }
  
  pre>code{
    font-size: 0.75rem;
  }

</style>

<h1>Markdown CSS Framework</h1>

<p>I was inspired by an offhand comment by someone in the <a href="https://www.patreon.com/shoptalkshow" target="_blank" rel="noopener noreferrer nofollow">Shoptalk Show Discord</a> after a lengthy discussion about tailwind css. While I am not a fan of tailwind, one thing they do use quite heavily is non standard characters for custom value class names. (for example: <code>p-[12px]</code> uses <code>[]</code> characters in a class name to represent a padding of 12 pixels.) In that moment, I realized you could make a lot of the standard markdown syntax into class names that do the same thing.</p>

<p>So I did.</p>
<p>Should you use this? <strong>Not without proper semantic HTML to go along with it.</strong> It's extremely inaccessible otherwise, and you might as well use a <code>&lt;div /&gt;</code> for everything.</p>

<p>Is this a neat idea? Sure! I definitely had fun making it.</p>

<p><strong>Note:</strong> This is a very <strong>Modern</strong> CSS framework. It makes heavy use of <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_nesting" target="_blank" rel="noopener noreferrer nofollow">CSS Nesting</a> (for nested lists specifically). </p>

<p>Anyway, enjoy the chaos.</p>

<h2>Documentation</h2>
<h3>Installation</h3>

To use this <strong>(please don't)</strong>, add the following to the head of your page:

<pre><code>&lt;link rel="stylesheet" href="https://codepen.io/fimion/pen/oNVQBRJ.css" /&gt;</code></pre>

<h3>Basics</h3>

<p class="*">Italics? No problem <code>class="*"</code></p>
<p class="**">Be Bold. <code>class="**"</code></p>
<p class="***">WHY NOT BOTH?? <code>class="***"</code></p>

<p>You can spoiler something with <code>class="||"</code>. Hover to remove spoiler: <span class="||">Surprise!</span></p>

<p> Did you make a <span class="~~">misteak</span> mistake? <code>class="~~"</code></p>

<p>we have <span class="^">superscript</span> (<code>class="^"</code>) and we have <span class="~">subscript</span> (<code>class="~"</code>)</p>

<p> you can also <span class="==">Highlight things</span> with <code>class="=="</code></p>

<p>Block quotes can be made with <code>class=">"</code></p>

<p class=">">
  This should be a block quote.
</p>

<h3>Code Blocks</h3>
<p> This word should be monospaced and inline: <span class="`">Testing</span> (<code>class="`"</code>)</p>

<p>A multiline preformatted text box can be made with <code>class="```"</code></p>
<p class="```">
  This text

  should

  preserve...

  ...whitespace
</p>

<h3>Lists</h3>

<p>Unordered lists can be made using <code>class="-"</code></p>
<p class="-">
  This is a list item?
  <span class="-">
    Test
    <span class="-">
      Nested!
    </span>
  </span>
</p>

<p>Ordered lists can be made using <code>class="1."</code> ("1." can be replaced by any number followed by a period)</p>
<p class="1.">
  Testing numbered lists
  <span class="2.">
    Inner item
    <span class="3.">
      Inner grand-item
    </span>
    <span class="10.">
      Inner grand-item
    </span>
  </span>
  <span class="6.">
    Inner item
    <span class="1.">
      Inner grand-item
    </span>
    <span class="1.">
      Inner grand-item
    </span>
  </span>
</p>
<p class="5.">Item 2</p>

<h3>Headings</h3>

<p>Headings can be made with <code>class="#"</code> to <code>class="######"</code>.</p>

<p class="#">Heading 1</p>
<p class="##">Heading 2</p>
<p class="###">Heading 3</p>
<p class="####">Heading 4</p>
<p class="#####">Heading 5</p>
<p class="######">Heading 6</p>

<h2>Can you combine them?</h2>

<p class="# > ~~ - || 1. *** ">Yes</p>
!

CSS 

              
                .\* {
  font-style: italic;
}

.\*\* {
  font-weight: bold;
}

.\*\*\* {
  font-weight: bold;
  font-style: italic;
}

.\# {
  font-size: 3rem;
}

.\#\# {
  font-size: 2.5rem;
}
.\#\#\# {
  font-size: 2rem;
}
.\#\#\#\# {
  font-size: 1.5rem;
}
.\#\#\#\#\# {
  font-size: 1rem;
}
.\#\#\#\#\#\# {
  font-size: 0.75rem;
}

.\` {
  display: inline-block;
  font-family: monospace;
  white-space: pre-wrap;
  background-color: var(--pre-background-color, #f2f2f2);
  padding: 0.2em;
}

.\`\`\` {
  display: block;
  font-family: monospace;
  white-space: pre;
  background-color: var(--pre-background-color, #f2f2f2);
  padding-block: 1em;
  padding-inline: 0.5em;
}

.\> {
  display: block;
  padding-block: 0.2em;
  padding-inline-start: 1ch;
  border-inline-start: 3px solid currentcolor;
  border-inline-start-color: accentcolor;
}

.\|\| {
  position: relative;

  &::after {
    position: absolute;
    display: inline;
    content: "";
    z-index: 10;
    background-color: currentcolor;
    transition: background-color 0.2s ease-in-out;
    inset-block: 0;
    inset-inline: 0;
    width: 100%;
  }

  &:hover::after {
    background-color: transparent;
  }

  &:focus::after {
    display: none;
  }
}

.\^ {
  vertical-align: super;
  font-size: smaller;
}

.\~ {
  vertical-align: sub;
  font-size: smaller;
}

.\~\~ {
  text-decoration: line-through;
}

.\=\= {
  padding: 0.15em;
  background-color: mark;
  color: marktext;
}

.\- {
  display: list-item;
  list-style-position: outside;
  list-style-type: disc;
  margin-inline-start: 2.5rem;

  & > & {
    list-style-type: circle;

    & > & {
      list-style-type: square;
    }
  }
}

:is([class*="1."], [class*="2."], [class*="3."], [class*="4."], [class*="5."], [class*="6."], [class*="7."], [class*="8."], [class*="9."], [class*="0."]) {
  
  --counter-name: first-list;
  display: list-item;
  list-style-type: decimal;
  counter-increment: var(--counter-name, first-list);
  margin-inline-start: 2.5rem;
  
  &:first-child{
    counter-set: var(--counter-name, first-list) 1;
  }

  *:not(&) + & {
    counter-set: var(--counter-name, first-list) 1;
  }

  &::marker {
    content: counter(var(--counter-name, first-list)) ". ";
  }

  & & {
    --counter-name: second-list;
  }
  
  & & & {
    --counter-name: third-list;
  }
  
  & & & & {
    --counter-name: fourth-list;
  }
  
  & & & & & {
    --counter-name: fifth-list;
  }
}
!

JS
!
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