The bitwise logical and shift operators apply to integers only.
</p>

<pre class="grammar">
+    sum                    integers, floats, complex values, strings
-    difference             integers, floats, complex values
*    product                integers, floats, complex values
/    quotient               integers, floats, complex values
%    remainder              integers

rem, #{divide($value, $rfs-rem-value)}rem, #{$value}px);\n        }\n        @else {\n          // Calculate the minimum value\n          $value-min: $rfs-base-value + divide(abs($value) - $rfs-base-value, $rfs-factor);\n\n          // Calculate difference between $value and the minimum value\n          $value-diff: abs($value) - $value-min;\n\n          // Base value formatting\n          $min-width: if($rfs-unit == rem, #{divide($value-min, $rfs-rem-value)}rem, #{$value-min}px);\n\n          //...

$enable-responsive-font-sizes {\n      font-size: #{$rfs-static}#{$rfs-suffix};\n    }\n    @else {\n      // Calculate the minimum font size for $fs\n      $fs-min: $rfs-base-font-size + divide($fs - $rfs-base-font-size, $rfs-factor);\n\n      // Calculate difference between $fs and the minimum font size\n      $fs-diff: $fs - $fs-min;\n\n      // Base font-size formatting\n      $min-width: if($rfs-font-size-unit == rem, #{divide($fs-min, $rfs-rem-value)}rem, #{$fs-min}px);\n\n      // Use `vmin` if two-dimensional...

$enable-responsive-font-sizes {\n      font-size: #{$rfs-static}#{$rfs-suffix};\n    }\n    @else {\n      // Calculate the minimum font size for $fs\n      $fs-min: $rfs-base-font-size + divide($fs - $rfs-base-font-size, $rfs-factor);\n\n      // Calculate difference between $fs and the minimum font size\n      $fs-diff: $fs - $fs-min;\n\n      // Base font-size formatting\n      $min-width: if($rfs-font-size-unit == rem, #{divide($fs-min, $rfs-rem-value)}rem, #{$fs-min}px);\n\n      // Use `vmin` if two-dimensional...