horizontal-rule 图标

align-center align-justify align-left align-right align-slash block-quote bold border-all border-bottom border-bottom-right border-center-h border-center-v border-inner border-left border-none border-outer border-right border-top border-top-left check check-double columns-3 command file-dashed-line filter-circle-xmark filter-list filter-slash filters font font-case h1 h2 h3 h4 h5 h6 hashtag-lock heading highlighter i-cursor icons indent italic kerning line-columns line-height list list-check list-ol list-ul lock-a lock-hashtag outdent overline paragraph-left rectangle-list spell-check square-a-lock square-check square-list strikethrough subscript superscript symbols table table-cells table-cells-column-lock table-cells-column-unlock table-cells-large table-cells-lock