Four @alex: Indeed :) #a little something a could necessarily mean a is really a grandchild or good^n grandchild of #a little something (it doesn't consider into account depth of nesting). The overall sibling combinator selector is similar to the adjacent sibling combinator selector. The real difference would be that https://pageoftoday.com/story4808190/prestashop-seo-friendly-url-pretty-url-without-id-number-can-be-fun-for-anyone