first commit

wp-includes/blocks/rss/editor.css

@@ -0,0 +1,13 @@
+.wp-block-rss li a>div{
+  display:inline;
+}
+
+.wp-block-rss__placeholder-form .wp-block-rss__placeholder-input{
+  flex:1 1 auto;
+}
+
+.wp-block-rss .wp-block-rss{
+  all:inherit;
+  margin:0;
+  padding:0;
+}