From 10f6e708e5a5b7fe68d30b86aeaf455d1e1d7daa Mon Sep 17 00:00:00 2001
From: Haishan <haishanhan@gmail.com>
Date: Sat, 21 Nov 2020 23:31:14 +0800
Subject: chore: improve a11y of traffic chart style selection

---
 src/components/Root.css | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/components/Root.css')

diff --git a/src/components/Root.css b/src/components/Root.css
index fe837de..39562cf 100644
--- a/src/components/Root.css
+++ b/src/components/Root.css
@@ -156,10 +156,20 @@ body.light {
   justify-content: center;
 }
 
-/* TODO remove fabgrp in component css files */
 .fabgrp {
   position: fixed;
   z-index: 3;
   right: 20px;
   bottom: 20px;
 }
+
+.visually-hidden {
+  position: absolute;
+  overflow: hidden;
+  clip: rect(0 0 0 0);
+  width: 1px;
+  height: 1px;
+  margin: -1px;
+  border: 0;
+  padding: 0;
+}
-- 
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