add sass/scratch.scss and associated sass files

Resources/public/sass/contrib/bourbon/addons/_position.scss

@@ -0,0 +1,48 @@
+@charset "UTF-8";
+
+/// Provides a quick method for setting an element’s position. Use a `null` value to “skip” a side.
+///
+/// @param {Position} $position [relative]
+///   A CSS position value
+///
+/// @param {Arglist} $coordinates [null null null null]
+///   List of values that correspond to the 4-value syntax for the edges of a box
+///
+/// @example scss - Usage
+///   .element {
+///     @include position(absolute, 0 null null 10em);
+///   }
+///
+/// @example css - CSS Output
+///   .element {
+///     left: 10em;
+///     position: absolute;
+///     top: 0;
+///   }
+///
+/// @require {function} is-length
+/// @require {function} unpack
+
+@mixin position($position: relative, $coordinates: null null null null) {
+  @if type-of($position) == list {
+    $coordinates: $position;
+    $position: relative;
+  }
+
+  $coordinates: unpack($coordinates);
+
+  $offsets: (
+    top:    nth($coordinates, 1),
+    right:  nth($coordinates, 2),
+    bottom: nth($coordinates, 3),
+    left:   nth($coordinates, 4)
+  );
+
+  position: $position;
+
+  @each $offset, $value in $offsets {
+    @if is-length($value) {
+      #{$offset}: $value;
+    }
+  }
+}