diff --git a/docs/assets/bootstrap.zip b/docs/assets/bootstrap.zip
index 6532a299b..77e70e94d 100644
Binary files a/docs/assets/bootstrap.zip and b/docs/assets/bootstrap.zip differ
diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index e32d2b13c..9654d856f 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -521,6 +521,10 @@ legend {
   border: 0;
   border-bottom: 1px solid #eee;
 }
+legend small {
+  font-size: 13.5px;
+  color: #999999;
+}
 label,
 input,
 button,
diff --git a/less/forms.less b/less/forms.less
index 17393b280..f262af0db 100644
--- a/less/forms.less
+++ b/less/forms.less
@@ -28,6 +28,12 @@ legend {
   color: @grayDark;
   border: 0;
   border-bottom: 1px solid #eee;
+
+  // Small
+  small {
+    font-size: @baseLineHeight * .75;
+    color: @grayLight;
+  }
 }
 
 // Set font for forms