diff --git a/static/bootstrap/stylesheets/bootstrap/mixins/_border-radius.scss b/static/bootstrap/stylesheets/bootstrap/mixins/_border-radius.scss
new file mode 100644
index 0000000000000000000000000000000000000000..ce1949987508574a8d31b1d688096ce8925ed051
--- /dev/null
+++ b/static/bootstrap/stylesheets/bootstrap/mixins/_border-radius.scss
@@ -0,0 +1,18 @@
+// Single side border-radius
+
+@mixin border-top-radius($radius) {
+  border-top-right-radius: $radius;
+   border-top-left-radius: $radius;
+}
+@mixin border-right-radius($radius) {
+  border-bottom-right-radius: $radius;
+     border-top-right-radius: $radius;
+}
+@mixin border-bottom-radius($radius) {
+  border-bottom-right-radius: $radius;
+   border-bottom-left-radius: $radius;
+}
+@mixin border-left-radius($radius) {
+  border-bottom-left-radius: $radius;
+     border-top-left-radius: $radius;
+}