fix: android highlight color in buttons

CHANGELOG.md

@@ -19,7 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-*
+* Android highlight color in buttons
 
 ## [0.5.7] - 2022-11-17
 

frontends/web/react/components/button/button.css

@@ -23,6 +23,7 @@
     -khtml-border-radius: 96px 96px 96px 96px;
     -webkit-border-radius: 96px 96px 96px 96px;
     padding: 0px 8px 0px 8px;
+    -webkit-tap-highlight-color: transparent;
     user-select: none;
     -o-user-select: none;
     -ms-user-select: none;

frontends/web/react/components/keyboard-gb/keyboard-gb.css

@@ -15,6 +15,7 @@
 
 .keyboard-gb {
     font-size: 0px;
+    -webkit-tap-highlight-color: transparent;
     text-align: center;
     touch-callout: none !important;
     -o-touch-callout: none !important;