From 8c9b6ec65373ceba31d6f80e035385d8b02c92fd Mon Sep 17 00:00:00 2001
From: Sebastian Busch <s.busch@obg-gruppe.de>
Date: Tue, 14 May 2019 09:34:00 +0200
Subject: [PATCH] prevent negative margin-bottom for form-item-with-help

without this, value can become negative. this caused following fieldset to float
to the right of the field with validation errors

(cherry picked from commit 43da8a5a835904270a6ccf48859d7bd6d91e04cd)
---
 components/form/style/index.less | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/form/style/index.less b/components/form/style/index.less
index 2df14b1e01ec..303275b4d436 100644
--- a/components/form/style/index.less
+++ b/components/form/style/index.less
@@ -113,7 +113,7 @@ input[type='checkbox'] {
   }
 
   &-with-help {
-    margin-bottom: @form-item-margin-bottom - @form-explain-height - @form-help-margin-top;
+    margin-bottom: max(0, @form-item-margin-bottom - @form-explain-height - @form-help-margin-top);
   }
 
   &-label {