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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.

            
              <h1>This is a Fluid &lt;h1&gt;</h1>

<h3>Font-size: <span class='size'></span></h3>

<h3>Resolution: <span class='res'></span>px</h3>

<p>To verify that this works, please resize your browser viewport</p>
            
          
!
            
              /// poly-fluid-sizing
/// Generate linear interpolated size values through multiple break points
/// @param $property - A string CSS property name
/// @param $map - A SASS map of viewport unit and size value pairs
/// @requires function linear-interpolation
/// @requires function map-sort
/// @example
///   @include poly-fluid-sizing('font-size', (576px: 22px, 768px: 24px, 992px: 34px));
/// @author Jake Wilson <jake.e.wilson@gmail.com>
@mixin poly-fluid-sizing($property, $map) {
  // Get the number of provided breakpoints
  $length: length(map-keys($map));
  
  // Error if the number of breakpoints is < 2
  @if ($length < 2) {
    @error "poly-fluid-sizing() $map requires at least values"
  }

  // Sort the map by viewport width (key)
  $map: map-sort($map);
  $keys: map-keys($map);

  // Minimum size
  #{$property}: map-get($map, nth($keys,1));
  
  // Interpolated size through breakpoints
  @for $i from 1 through ($length - 1) {
    @media (min-width:nth($keys,$i)) {
      #{$property}: linear-interpolation((nth($keys,$i): map-get($map, nth($keys,$i)), nth($keys,($i+1)): map-get($map, nth($keys,($i + 1)))));
    }
  }
  
  // Maxmimum size
  @media (min-width:nth($keys,$length)) {
    #{$property}: map-get($map, nth($keys,$length));
  }
}

/// linear-interpolation
/// Calculate the definition of a line between two points
/// @param $map - A SASS map of viewport widths and size value pairs
/// @returns A linear equation as a calc() function
/// @example
///   font-size: linear-interpolation((320px: 18px, 768px: 26px));
/// @author Jake Wilson <jake.e.wilson@gmail.com>
@function linear-interpolation($map) {
  $keys: map-keys($map);
  @if (length($keys) != 2) {
    @error "linear-interpolation() $map must be exactly 2 values";
  }
  // The slope
  $m: (map-get($map, nth($keys, 2)) - map-get($map, nth($keys, 1)))/(nth($keys, 2) - nth($keys,1));
  
  // The y-intercept
  $b: map-get($map, nth($keys, 1)) - $m * nth($keys, 1);
  
  // Determine if the sign should be positive or negative
  $sign: "+";
  @if ($b < 0) {
    $sign: "-";
    $b: abs($b);
  }
  
  @return calc(#{$m*100}vw #{$sign} #{$b});
}

/// list-sort
/// Sort a SASS list
/// @param $list - A SASS list
/// @returns A sorted SASS list
/// @requires function list-remove
/// @author Jake Wilson <jake.e.wilson@gmail.com>
@function list-sort($list) {
  $sortedlist: ();
  @while length($list) > 0 {
    $value: nth($list,1);
    @each $item in $list {
      @if $item < $value {
        $value: $item;
      }
    }
    $sortedlist: append($sortedlist, $value, 'space');
    $list: list-remove($list, index($list, $value));
  }
  @return $sortedlist;
}

/// map-sort
/// Sort map by keys
/// @param $map - A SASS map
/// @returns A SASS map sorted by keys
/// @requires function list-sort
/// @author Jake Wilson <jake.e.wilson@gmail.com>
@function map-sort($map) {
  $keys: list-sort(map-keys($map));
  $sortedMap: ();
  @each $key in $keys {
    $sortedMap: map-merge($sortedMap, ($key: map-get($map, $key)));
  }
  @return $sortedMap;
}

/// list-remove
/// Remove an item from a list
/// @param $list - A SASS list
/// @param $index - The list index to remove
/// @returns A SASS list
/// @author Jake Wilson <jake.e.wilson@gmail.com>
@function list-remove($list, $index) {
  $newList: ();
  @for $i from 1 through length($list) {
    @if $i != $index {
      $newList: append($newList, nth($list,$i), 'space');
    }
  }
  @return $newList;
}

h1 {
  $map: (576px: 22px, 768px: 24px, 992px: 34px);
  @include poly-fluid-sizing('font-size', $map);
  color: #e95c33;
}

body {
  font-family: 'Open Sans', sans-serif;
  text-align: center;
  background-color: #EEE;
}
body,html {
  height: 100%;
  
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100%;
}
            
          
!
            
              $(function () {
  
  var $window = $(window)
  var $h1 = $('h1')
  var $res = $('.res')
  var $size = $('.size')
  
  $window.on('resize', function (data) {
    $res.text($window.width())
    $size.text($h1.css('fontSize'))
  }).trigger('resize')
  
})
            
          
!
999px
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