diff --git a/themes/core/cleanslate/public/sass/partials/_helpers.scss b/themes/core/cleanslate/public/sass/partials/_helpers.scss
new file mode 100644
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--- /dev/null
+++ b/themes/core/cleanslate/public/sass/partials/_helpers.scss
@@ -0,0 +1,90 @@
+/**
+ * Non-semantic helper classes: please define your styles before this section.
+ */
+@import "compass/css3";
+@import "compass/css3/pie";
+
+
+/* For image replacement */
+.ir {
+	display: block;
+	text-indent: -99in;
+	overflow: hidden;
+	background-repeat: no-repeat;
+	text-align: left;
+	direction: ltr;
+}
+
+/* Hide for both screenreaders and browsers:
+   css-discuss.incutio.com/wiki/Screenreader_Visibility */
+.hidden {
+	display: none;
+	visibility: hidden;
+}
+
+/* Hide only visually, but have it available for screenreaders: by Jon Neal.
+  www.webaim.org/techniques/css/invisiblecontent/  &  j.mp/visuallyhidden */
+.visuallyhidden {
+	border: 0;
+	clip: rect(0 0 0 0);
+	height: 1px;
+	margin: -1px;
+	overflow: hidden;
+	padding: 0;
+	position: absolute;
+	width: 1px;
+}
+
+/* Extends the .visuallyhidden class to allow the element to be focusable when navigated to via the keyboard: drupal.org/node/897638 */
+.visuallyhidden.focusable:active,
+.visuallyhidden.focusable:focus {
+	clip: auto;
+	height: auto;
+	margin: 0;
+	overflow: visible;
+	position: static;
+	width: auto;
+}
+
+/* Hide visually and from screenreaders, but maintain layout */
+.invisible {
+	visibility: hidden;
+}
+
+/* The Magnificent Clearfix: Updated to prevent margin-collapsing on child elements in most situations.
+   nicolasgallagher.com/micro-clearfix-hack/ */
+.clearfix:before,
+.clearfix:after {
+	content: "";
+	display: table;
+}
+
+.clearfix:after {
+	clear: both;
+}
+
+.clearfix {
+	zoom: 1;
+}
+
+.centred {
+	text-align: center;
+}
+
+.pie-element {
+	// relative is the default, so passing relative
+	// is redundant, but we do it here for clarity.
+	@include pie-element(relative);
+}
+
+// But sometimes this messes up your positioning
+// So you can also use z-indexing. In this case
+// an ancestor element before or having the first
+// opaque background should be marked as a pie-container
+// which gives it a z-index of 0 (actually any z-index
+// can be provided to the pie-container mixin).
+// And then the pie element itself should be given
+// a z-index of -1.
+.pie-container {
+	@include pie-container;
+}
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