Fix copy icon background ordering

I had this working, then sorted the properties, which made it stop
working, because `background` is a shorthand form, and when it came
after the other `background-*` properties in the list it effectively
overrode them.

Make it `background-image` instead, so it doesn't override, and is
immune to sorting vagaries.

diff --git a/src/App.css b/src/App.css
index 97037bfde9c040a3abdbf5cd559acf1959541cec..b2bc8a43d9ee95f49f9bb624bee94b721bcaf03c 100644 (file)
--- a/src/App.css
+++ b/src/App.css
@@ -22,9 +22,9 @@ body {
 }
 
 .hextrapolate-copy {
+  background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgdmlld0JveD0iMCAwIDMyIDMyIj48cGF0aCBmaWxsPSIjNDQ0IiBkPSJNMjAgOFYwSDZMMCA2djE4aDEydjhoMjBWOEgyMHpNNiAyLjgyOFY2SDIuODI4TDYgMi44Mjh6TTIgMjJWOGg2VjJoMTB2NmwtNiA2djhIMnptMTYtMTEuMTcyVjE0aC0zLjE3MkwxOCAxMC44Mjh6TTMwIDMwSDE0VjE2aDZ2LTZoMTB2MjB6Ii8+PC9zdmc+);
   background-repeat: no-repeat;
   background-size: 16px 16px;
-  background: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgdmlld0JveD0iMCAwIDMyIDMyIj48cGF0aCBmaWxsPSIjNDQ0IiBkPSJNMjAgOFYwSDZMMCA2djE4aDEydjhoMjBWOEgyMHpNNiAyLjgyOFY2SDIuODI4TDYgMi44Mjh6TTIgMjJWOGg2VjJoMTB2NmwtNiA2djhIMnptMTYtMTEuMTcyVjE0aC0zLjE3MkwxOCAxMC44Mjh6TTMwIDMwSDE0VjE2aDZ2LTZoMTB2MjB6Ii8+PC9zdmc+);
   display: inline-block;
   height: 16px;
   margin-left: 8px;