diff --git a/size.scss b/size.scss
index 69d20cc..9d83e9e 100644
--- a/size.scss
+++ b/size.scss
@@ -2,6 +2,14 @@
     width: 100%;
 }
 
+.wf-80 {
+    width: 80%;
+}
+
+.wf-20 {
+    width: 20%;
+}
+
 .wf-50 {
     width: 50%;
 }