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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <body>
  <div>
    <h1>Here is an H1 title</h1>
    <h2>Here is an H2 subhead, resize your browser to see the ratio difference</h2>
    <p>Here is some body text, here is some more, check it out, body text!</p>
  </div>
</body>
            
          
!
            
              /**
 * CSS variables have 77% global browser support
 * update: now up to 87%! 
 * But they don't work in IE,
 * so we can use Sass for a fallback
 * @link https://caniuse.com/#search=css%20variables
 * 
 * Another consideration is that 90%+ of mobile devices support CSS variables, so you could flip the media query to mobile and make it variable-only and use IE fallback code only for desktop.
 */

/** 
 * Set fallback base font and scale ratio with Sass 
 * Use these numbers with :root when removing fallback
 */

$font-size: 100%; // 16px
$ratio: 1.12;
$ratio-large: 1.25;

/* Create Sass type sizes */

$h4: $font-size * $ratio;
$h3: $h4 * $ratio;
$h2: $h3 * $ratio;
$h1: $h2 * $ratio;

/* Sass second scale with larger type sizes */

$h4-large: $font-size * $ratio-large;
$h3-large: $h4-large * $ratio-large;
$h2-large: $h3-large * $ratio-large;
$h1-large: $h2-large * $ratio-large;

/** 
 * Use Sass variables with CSS variables for single variable source
 * Replace these with above numbers in the future 
 * It appears Sass variables need to be interpolated to strings to work with CSS variables
 */

:root {
  --font-size: #{$font-size};
  --ratio: #{$ratio};
  --ratio-large: #{$ratio-large};

/** 
 * Set heading sizes with CSS variables
 * any browser that can support variables will support Calc
 * CSS Calc has 94% support
 * @link https://caniuse.com/#feat=calc
 */

  --h4: calc(var(--font-size) * var(--ratio));
  --h3: calc(var(--h4) * var(--ratio));
  --h2: calc(var(--h3) * var(--ratio));
  --h1: calc(var(--h2) * var(--ratio));
}

p {
  font-size: $font-size; /* variable fallback for IE11 */
	font-size: var(--font-size);
} 

h1 {
  font-size: $h1; /* variable fallback for IE11 */
  font-size: var(--h1);
}

h2 {
  font-size: $h2; /* variable fallback for IE11 */
	font-size: var(--h2);
}

/* switch to larger ratio */

@media screen and (min-width: 800px) {
    :root {
    --ratio: var(--ratio-large); 
  }
  
  /** 
 * 1. Variable fallback for IE11. When no longer supporting IE11, these can be removed and the ratio can be changed with the single variable change above.
 * This method generates more code than Sass alone but preps the stylesheet for less code with vanilla CSS in the long run
 */
  
  h1 {
   font-size: $h1-large; /* 1 */
  }
  
  h2 {
    font-size: $h2-large; /* 1 */
  }
  
}
            
          
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