From 4911bee0592b134c04736048a2fecaf03d6ea145 Mon Sep 17 00:00:00 2001
From: zombieJ <smith3816@gmail.com>
Date: Wed, 12 Jun 2019 12:20:32 +0800
Subject: [PATCH] use calc to fix tree line (#17055)

---
 components/tree/style/index.less | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/components/tree/style/index.less b/components/tree/style/index.less
index ca9053870a..da347b39f7 100644
--- a/components/tree/style/index.less
+++ b/components/tree/style/index.less
@@ -244,7 +244,8 @@
       left: 12px;
       width: 1px;
       height: 100%;
-      margin: 22px 0;
+      height: calc(100% - 22px); // Remove additional height if support
+      margin: 22px 0 0;
       border-left: 1px solid @border-color-base;
       content: ' ';
     }