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: style-rtl.min.css

.wp-block-navigation .wp-block-navigation-item__label{overflow-wrap:break-word}.wp-block-navigation .wp-block-navigation-item__description{display:none}.link-ui-tools{border-top:1px solid #f0f0f0;padding:8px}.link-ui-block-inserter{padding-top:8px}.link-ui-block-inserter__back{margin-right:8px;text-transform:uppercase}