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Asked: 2026-06-18T13:01:32+00:00

Whats the difference between these two selectors, I thought they would have the same

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Whats the difference between these two selectors, I thought they would have the same effect, but they don’t? can someone explain please?

    #parent-div #child-div

    #parent-div#child-div
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1 Answer

  1. Editorial Team

    The (space) in CSS selectors is the “descendant selector.”

    1. Selects an element with ID child-div that has an ancestor of parent-div
    2. Selects an element that has an id of both parent-div and child-div (which is impossible)

    Just for fun: parent-div#child-div is a valid ID, but as part of the CSS syntax you have to escape the # in the ruleset:

    http://jsfiddle.net/ExplosionPIlls/xdWNV/1/

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