From 2dcc50f01715302cdcbe5ae49c7539b0288f63ab Mon Sep 17 00:00:00 2001
From: Mark Otto <markdotto@gmail.com>
Date: Thu, 27 Oct 2016 14:41:12 -0700
Subject: [PATCH] Calculcate the top offset for custom control indicators

Fixes #21023.

Uses some math functions to determine what the offset should be. This is helpful for those who customize the size of their indicators and still want them vertically centered.
---
 scss/_custom-forms.scss | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scss/_custom-forms.scss b/scss/_custom-forms.scss
index e74f5c744a..18aedc66fa 100644
--- a/scss/_custom-forms.scss
+++ b/scss/_custom-forms.scss
@@ -61,7 +61,7 @@
 
 .custom-control-indicator {
   position: absolute;
-  top: .25rem;
+  top: (($line-height-base - $custom-control-indicator-size) / 2);
   left: 0;
   display: block;
   width: $custom-control-indicator-size;