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HTML

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CSS

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CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <main>
  <h1>Inspecting Cascade & Inheritance</h1>
  
  <section id="declared" class="demo-section">
    <h2 style="color: rebeccapurple">
      Declared Rules 
      <em>by cascade priority</em>
    </h2>
    <ul>
      <li>
        At the top of the rule panel,
        we can see directly targeted selector-blocks
        sorted by their relative weight:
        a combination of specificity and source-order.
      </li>
      <li>
        Generally rules higher up in the panel
        will overrive rules lower down.
      </li>
    </ul>
  </section>

  <section id="inherited" class="demo-section inherited">
    <h2>
      Inherited Rules
      <em>by source proximity</em>
    </h2>
    <p>
      Below the targeted rules
      we can see inherited properties from ancestor selectors:
      from the closest parent
      all the way back to the document root.
      The closest ancestor will always win.
    </p>
  </section>
</main>
!

CSS 

              
                @property --gap {
  syntax: '<length>';
  inherits: true;
  initial-value: 14px;
}

main {
  border: medium solid;
  padding: 1em;
}

#declared {
  outline-style: dashed;
}

.inherited {
  outline-style: solid;
  outline-offset: 6px !important;
  font-style: italic;
}

.demo-section {
  outline: 0.125em dotted;
  outline-offset: 0.25em;
}




@layer setup {
  * { box-sizing: border-box; }
  html { block-size: 100%; }
  
  body {
    --text-small: clamp(0.938rem, 0.824rem + 0.568cqi, 1.25rem);
    --text-normal: clamp(1.25rem, 1.023rem + 1.136cqi, 1.875rem);
    --text-large: clamp(1.35rem, 0.818rem + 2.659cqi, 2.813rem);
    --text-xlarge: clamp(1.7rem, 0.784rem + 4.58cqi, 4.219rem);
    --gap: clamp(12px, 0rem + 3.75cqi, 24px);
    font-size: var(--text-normal);
    margin: var(--gap);
    min-block-size: 100%;
  }  
  
  img,
  svg {
    display: block;
    max-inline-size: 100%;
  }
  
  picture { display: contents; }
  
  input,
  button,
  textarea,
  select {
    font: inherit;
  }
}
!

JS
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999px

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