WP File Manager

Name	Action
..
block.json	Edit
editor-rtl.css	Edit
editor-rtl.min.css	Edit
editor.css	Edit
editor.min.css	Edit
style-rtl.css	Edit
style-rtl.min.css	Edit
style.css	Edit
style.min.css	Edit

Editing: editor-rtl.css

.wp-block-rss li a>div{ display:inline; } .wp-block-rss__placeholder-form .wp-block-rss__placeholder-input{ flex:1 1 auto; }