refactor(css): add styles targeting SVG button/modal icons (#1464)

* refactor(css): add global classes for common icon types

* refactor(css): target child SVGs instead of creating new icon classes

* fix: fix ButtonWithDropdown style class spacing

tailwind.config.js

@@ -60,6 +60,8 @@ module.exports = {
   },
   variants: {
     cursor: ['disabled'],
+    width: ['first', 'last', 'responsive'],
+    height: ['first', 'last', 'responsive'],
     padding: ['first', 'last', 'responsive'],
     borderWidth: ['first', 'last'],
     margin: ['first', 'last', 'responsive'],