diff --git a/static/bootstrap/stylesheets/bootstrap/mixins/_clearfix.scss b/static/bootstrap/stylesheets/bootstrap/mixins/_clearfix.scss
new file mode 100644
index 0000000000000000000000000000000000000000..dc3e2ab426edf4d5ae1f27d5c767ff396f359243
--- /dev/null
+++ b/static/bootstrap/stylesheets/bootstrap/mixins/_clearfix.scss
@@ -0,0 +1,22 @@
+// Clearfix
+//
+// For modern browsers
+// 1. The space content is one way to avoid an Opera bug when the
+//    contenteditable attribute is included anywhere else in the document.
+//    Otherwise it causes space to appear at the top and bottom of elements
+//    that are clearfixed.
+// 2. The use of `table` rather than `block` is only necessary if using
+//    `:before` to contain the top-margins of child elements.
+//
+// Source: http://nicolasgallagher.com/micro-clearfix-hack/
+
+@mixin clearfix() {
+  &:before,
+  &:after {
+    content: " "; // 1
+    display: table; // 2
+  }
+  &:after {
+    clear: both;
+  }
+}