Index: frontend/node_modules/postcss-discard-empty/src/index.js
===================================================================
--- frontend/node_modules/postcss-discard-empty/src/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/postcss-discard-empty/src/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,57 @@
+'use strict';
+const plugin = 'postcss-discard-empty';
+/**
+ * @param {import('postcss').Root} css
+ * @param {import('postcss').Result} result
+ * @return {void}
+ */
+function discardAndReport(css, result) {
+  /**
+   * @param {import('postcss').AnyNode} node
+   * @return {void}
+   */
+  function discardEmpty(node) {
+    const { type } = node;
+    /** @type {(import('postcss').ChildNode | import('postcss').ChildProps)[] | undefined} */
+    const sub = /** @type {any} */ (node).nodes;
+    if (sub) {
+      /** @type {import('postcss').Container} */ (node).each(discardEmpty);
+    }
+
+    if (
+      (type === 'decl' && !node.value && !node.prop.startsWith('--')) ||
+      (type === 'rule' && !node.selector) ||
+      (sub && !sub.length) ||
+      (type === 'atrule' &&
+        ((!sub && !node.params) ||
+          (!node.params &&
+            !(/** @type {import('postcss').ChildNode[]}*/ (sub).length))))
+    ) {
+      node.remove();
+
+      result.messages.push({
+        type: 'removal',
+        plugin,
+        node,
+      });
+    }
+  }
+
+  css.each(discardEmpty);
+}
+
+/**
+ * @type {import('postcss').PluginCreator<void>}
+ * @return {import('postcss').Plugin}
+ */
+function pluginCreator() {
+  return {
+    postcssPlugin: plugin,
+    OnceExit(css, { result }) {
+      discardAndReport(css, result);
+    },
+  };
+}
+
+pluginCreator.postcss = true;
+module.exports = pluginCreator;