drupal/core/themes/seven/css/components/block-recent-content.css

/**
 * Recent content block.
 */
#block-node-recent table,
#block-node-recent tr {
  border: none;
}
#block-node-recent .more-link {
  padding: 0 5px 5px 0; /* LTR */
}
[dir="rtl"] #block-node-recent .more-link {
  padding: 0 0 5px 5px;
}