Menene babbar nau'ikan zaɓi CSS?

Question

IT Interview Practice · Accepted Answer

Zaɓin ɓatayi aikin zaɓi ya kamata ya aiki. Suna karkace daga sauƙi (ta alamun) zuwa ƙarfi masu haɗi. ```css /* Basic selectors */ p { } /* type: all

*/ .card { } /* class: elements with class="card" (reusable) */ #header { } /* id: the one element with id="header" (unique) */ * { } /* universal: every element */ [type="text"]{ } /* attribute: inputs with type=text */ ``` ## Haɗin — alaƙa tsakanin abubuwa ```css .menu li { } /* descendant: any li INSIDE .menu (any depth) */ .menu > li { } /* child: only DIRECT children li */ h2 + p { } /* adjacent sibling: the p immediately AFTER an h2 */ h2 ~ p { } /* general sibling: all p siblings after an h2 */ ``` Alaliya tsakanin sarari (jiyya) da `>` (kaɗai) muhimmu: `.menu li` yayi daidai da `li`s da aka suka cikin zurfi, yayin da `.menu > li` yayi daidai da saman jiya kawai. ## Pseudo-aji da pseudo-abubuwa ```css a:hover { } /* state: while hovered */ li:first-child { } /* structural: the first li */ li:nth-child(2n){ } /* every even li */ p::first-line { } /* pseudo-element: the first rendered line */ ``` ## Tara da sabbin zaɓi ```css h1, h2, h3 { } /* apply to all three */ :is(h1, h2) a { } /* :is() shortens long selector lists */ .card:has(img) { } /* :has() — a parent that CONTAINS an img */ ``` ## Me yasa ya mahaɗa Zaɓin ɓatayi yadda kake haɗa salon da alamun. Ganowa a jikin ajya (aiki-ɗaki), haɗi (don alaƙa), da pseudo-aji na tsare/yanayi zai ba ka damar ka xi gida ba tare da kara ajya a ko'ina — kuma sabbin `:is()`/`:has()` suka sauƙaita xi gida masu ƙarfi. Fili ajya akan ids/haɗi mai nauyi don tana da ƙarfi.

Haɗin — alaƙa tsakanin abubuwa

Pseudo-aji da pseudo-abubuwa

Tara da sabbin zaɓi

Me yasa ya mahaɗa

Tambayoyi masu alaƙa