CSS-selector, a me kona kūlana ma ka formatting mana html-palapala

E pili ana i ka paena a hoʻopiha ia me kekahi mau oihana mua o ka pūnaewele puni honuaʻaoʻao, kela kanaka keia kanaka, e maka i kau e like me ka CSS-selector. Ua lawelawe 'ana i ka hou pololei hooholo i na kumu o ka mana html-waihona o ko lākou mau manao a me ka wahi ma luna o kaʻaoʻao. E hana i kēia, e ho okumu i kekahi CSS-he palapala i kupua mai kekahi Mahouka a me kā lākou formatting nā koho: waihoʻoluʻu a pau, nui, wahi a me ka 'ē aʻe. Kela a me keia pūnaewele puni honua akamai e ike, a e hiki ke komo pono ka makemake mau koho. Ka mea, i puunaueia ma ke 'ano, i ke kumu nui o ka a mākou e kūkā ai ma lalo iho nei.

Ano o Mahouka ma CSS

Kaumaha ma muli o ia i ka hehee ai ua noi mana html-formatted, CSS-selector e hai aku i kekahi o na kēia mau pūʻulu.

• Tag selector;
• papa selector;
• ka memo a-selector;
• kaila selector.

Tag selector

Ua Ua i kapaia "type selector" a "hehee ai", ia mea i ka poe noonoo ole loa, a he pono ole. E like me kona CSS-palapala i na inoa o na kumu o ka mana html-waihona, a mākou i hōʻike. No ka laʻana, ina ua pono, e kau aku i ka paukū kaila, ua koho 'ia i ka waiwai a me kā lākou mau aiee no ka hehee ai pa {kāʻei kua: x; waihoʻoluʻu: y me; nui: Z}. Ma keia hihia, e i nā paukū o ka pūnaewele puni honuaʻaoʻao i nā like waihona (kāʻei kua kala like 'ole, kikokikona nui, a no laila, ma luna o. D.).

papa selector

A me ka mea ina e pono ai, e ninau aku i kou nā paukū mea okoa, mai nā styles? E hana i kēia, aia no he papa selector.

CSS-palapala ma keia hihia hiki ai ke komo i ka puka o ka kēia palapala: p.first {waihoʻoluʻu: m; Font-size: y me}. Pela, ke hoakaka i ka waiwai o ka "ano" a me ka "nui" mua papa paukū wale no.

Ma ka mana html-palapala ma keia hihia komo i kekahi papa kaila i ka inoa o ke kaila mua. Classes hiki e like ka nui me ke kaila kou makemake, e pili ana no ka pūnaeweleʻaoʻao hehee wale.

Selector ka memo a

Pinepine ka mea, he pono e hoakaka i ke kaila hou pololei, no ka laʻana i kekahi i kekahi hehee ai o kaʻaoʻao, a, e Laʻana ia. Ma keia kulana, ke kokua mai ka memo a-selector. Ka mana html AEI hāʻawi i ka makemake'ikamu inoa 'ia e hōʻike ia ma waena o ka' ē aʻe. No ka laʻana, na kumu mua i mākou makemake e kau okoa mai nā kaila e ia i ka 'atikala inoa.

A laila, i loko o ka mana html-palapala ka lanakila i ka :, EeIeOIeOIeAa H1 hōʻike no, ua articlename. A i loko o ka CSS-waihona, ke koho 'ia i ke kaila, pepa i ka ID inoa grille: #articlename {waihoʻoluʻu: uliuli; kikokikona-align: waena}. Ano mākou headline, e i ka waihoʻoluʻu uliuli, a e pili ana.

hiki ke ho'ākāka 'ia ma kēlā me kēia o ka mea ma lunaʻano like "he mea CSS-selector". Ka mea hoakaka i ka formatting no kekahi mau aiao o ka mana html-palapala: pu like oihana mua (e like, a pau nā paukū o ka 'atikala), hoʻokahi papa (no ka mea hoike, wale i ka paukū mua) a me kekahi mau' ikamu (no ka mea hoike, i ka 'atikala inoa).

kaila Mahouka

Ma waho aʻeo ia ka luna, aia no he CSS-Mahouka kailaʻae - oi huikau iaoia o ka palapala noi styles. Ua apono 'mana html waihona oihana mua ma luna o ka mea koho kaila a waiwai. Aia i kekahi mauʻano likeʻole o kēia selector:

• ma ke alo o ke kaila;
• ma kona mau waiwai;
• ma ka hapa kaila waiwai;
• ma luna o kona mau 'waiwai.

E hoi kakou i kela mea keia mea o kēia mau? Ueo:

1. Ka mua hihia. Formatting ua pili, ina manawa i loko o kekahi mau 'kaila mana html-code (ia paha e ka p, div, :, EeIeOIeOIeAa, etc.). Inā ia mea ole, e hoʻohana i ka nōhie no na kumu a pau o ka kaila. No ka laʻana, no na kumu mua me ka inoa (hoʻopololei kōkua).
2. I ka lua o ka hihia. Ke kaila Ua pili wale i ka mana html-hehee wale i loaʻa he mau ń o ke kaila loina. No ka laʻana, e hoʻokomo o ka na kumu mua, kahi o ka nui o ka 'ano kaila lākou, noho mamuli o lakou.
3. Ke kolu o ka hihia. Ma lalo o ka waihona e wale ioiinyony ikamu i loko o ka papa inoa o nā loina i loaʻa i kekahi hua'ōlelo. No ka laʻana, sideBar kaila "papa" no ka oihana mua div.
4. I ka ha o ka hihia. Style ua ho'ākāka 'wale no kela mau kumu o ka mana html-palapala, nona ka maikai kaila mai i kekahi waiwai, a me ka hoʻomaka me ia. No ka laʻana, ka hoʻohana 'ana o ka mea i hoakaka ia ano i nā kumu a me ka' ōlelo Pelekānia'ōlelo kaila (a paha e Hawaii en, Hawaii en-rus, Hawaii en-Au a me ka 'ole. D.).

Penei, ma ka hoʻohana 'ana i kekahi a me ka' ē aʻe, ka CSS selector, hiki pono ke hoakaka ia me he holoʻokoʻa pūnaeweleʻaoʻao, a wehewehe i kekahi o kona oihana mua.