Update clipboard copy button for light / dark mode

Author: rossta

app/javascript/css/application.css

@@ -21,6 +21,7 @@
 @import './utilities/custom.css' layer(utilities);
 
 @import './components/logo.css';
+@import './components/clipboard-copy.css';
 @import './components/button.css';
 @import './components/select.css';
 @import './components/code.scss';

app/javascript/css/components/clipboard-copy.css

@@ -0,0 +1,3 @@
+button.button--clipboard-copy {
+  background-color: transparent;
+}

app/views/components/clipboard_copy.rb

@@ -17,7 +17,7 @@ def view_template
         aria_label: "Copy to clipboard",
         type: "button",
         class:
-          "text-gray-500 dark:text-gray-400 group rounded-md text-sm md:p-2 relative",
+          "button--clipboard-copy text-gray-500 dark:text-gray-400 group rounded-md text-sm md:p-2 relative",
         data_action: "clipboard-copy#copy",
         data_clipboard_copy_target: "source",
         data_value: text