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Edit File: editor-rtl.min.css

.block-editor-block-list__block[data-type="core/nextpage"]{margin-bottom:28px;margin-top:28px;max-width:100%;text-align:center}.wp-block-nextpage{display:block;text-align:center;white-space:nowrap}.wp-block-nextpage>span{background:#fff;border-radius:4px;color:#757575;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:13px;font-weight:600;height:24px;padding:6px 8px;position:relative;text-transform:uppercase}.wp-block-nextpage:before{border-top:3px dashed #ccc;content:"";left:0;position:absolute;right:0;top:50%}