diff --git a/config/asset_injector.css.purge_font_size_modifications.yml b/config/asset_injector.css.purge_font_size_modifications.yml
new file mode 100644
index 0000000..5daae2c
--- /dev/null
+++ b/config/asset_injector.css.purge_font_size_modifications.yml
@@ -0,0 +1,21 @@
+uuid: b1b17c5f-0612-4cca-888b-35f5d37a6915
+langcode: en
+status: true
+dependencies:
+  module:
+    - block_visibility_groups
+id: purge_font_size_modifications
+label: 'Purge font size modifications'
+code: |-
+  .purge-child-class .is-medium {
+  	font-size: 1rem;
+  }
+media: all
+preprocess: true
+conditions:
+  condition_group:
+    id: condition_group
+    negate: false
+    block_visibility_group: ''
+contexts: {  }
+conditions_require_all: true