hide avatar in sidebar

assets/css/jekyll-theme-chirpy.scss

@@ -0,0 +1,15 @@
+---
+---
+
+/* prettier-ignore */
+@use 'main
+{%- if jekyll.environment == 'production' -%}
+  .bundle
+{%- endif -%}
+';
+
+/* append your custom style below */
+
+#sidebar #avatar {
+  display: none;
+}