When you click a link in the Android browser, the target link area gets highlighted with an orange box by default. A longpress then opens up the context menu for link handl
This might be useful: How to Hide Android WebView Highlight Border
The answer being: add this CSS * { -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }.
* { -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
Hopefully it is.