CSS bango nuna gaskiya. M bango ko rubutu da CSS

Da zuwan CSS3 yanar gizo zanen kaya aiki a hanyoyi da dama ya zama sauki kuma mafi ma'ana: bayan duk, za ka iya yanzu gaske flexibly siffanta wani abu, kasa akai-akai resorting to JavaScript. Bari mu ce ka bukatar ka daidaita da nuna gaskiya da bango - CSS nan da nan yayi dama zažužžukan.

Fage ayyana ta sa na halayen (bango-image, baya-wuri , baya-size, baya-sake, baya-makala, baya-asali, baya-clip, baya-launi), kowanne daga abin da za a iya sanya dabam, ko kuma a hade a karkashin sifa bango. Bari mu bincika kowane daga cikinsu a cikin daki-daki.

Sanyã bango-launi

A CSS, da bango launi za a iya kafa a hanyoyi da dama: yin amfani da wani hex code, launi sunan ko RGB-shigarwa. A CSS3 ya zama zai yiwu a yi amfani da maimakon RGB-rikodi zaɓi da RGBA.

Hex launi code da aka rubuta a cikin dũkiyar bayan da raga: bango-launi: # FFDAB9. Idan haruffa a wannan shigarwa ne guda nau'i-nau'i, code ne yawanci kadan da yanke: # ccff00 za a iya rubuta kamar # cf0:

jiki {bango-launi: # cf0 ;}.

Sunan shi ne, ko da a cikin mafi m launuka. Alal misali, a cikin Bugu da kari ga misali ja da fari za ka iya amfani da NavajoWhite (#FFDEAD) ko Honeydew2 (# E0EEE0):

jiki {bango-launi: m. }.

A karshen wani zaɓi ne RGB ko RGBA shigarwa ba ka damar saka ba kawai launi amma kuma da nuna gaskiya da CSS bango, amma Hanyar aiki ne kawai a IE versions girmi 9. Wasu masu bincike gane al'ada version tare da nuna gaskiya. Bisa ga W3C matsayin shi ne fin so yin amfani da har yanzu RGBA maimakon na more saba RGB.

A karshe darajar a RGBA bango da ya kafa da shirin hana haske daga 0 (m) zuwa 1 (opaque).

Akwai wasu m dabi'u. A baya launi za a iya kafa ta amfani da HSL da HSLA. Dukansu aka kara to CSS3, sabili da haka basu da goyan bayan IE version 9 ko mafi girma. Embodiments m RGB ko RGBA, kawai a wani daban-daban format: dafa (inuwa - darajar a kan launi dabaran, an ba da darajõji), saturate (jikewa - launi tsanani a matsayin mai yawan, daga 0 to 100), haske (lightness - haske, auna kamar wancan siga saturate ).

Sanyã bango-image

A mafi giciye-browser version na m bango - wannan shi ne yin amfani da image. A CSS3, za ka iya saita har ma fiye da images, wannan da aka yi ta hanyar wani waƙafi. misali:

{Bango-jiki image: url (bg1.png), url (bg2.png)}.

Wannan hanya na da goyon bayan ko da IE8. Da dama hotuna a bango na roba amfani a cikin layout. Mahimmanci, kada ka manta da su yi amfani da duk wani image kuma saita bango launi a CSS, kamar yadda masu amfani da za su iya kawai upload wani hoto.

Sanyã bango-wuri

Idan ka yi amfani da hoton don saita bango naúrar, CSS ba ka damar daidaita image ko ina a kan allo. By tsoho, da image aka located a saman kwanar hagu. Sifa daukan ko dai fi'ili umarnin (top, kasa, hagu, dama), na lamba (sha'awa, pixels da sauran raka'a). A wannan yanayin, dole ne ka saka biyu dabi'u, a kwance, kuma a tsaye:

jiki {bango-wuri: dama cibiyar ;} - a cikin wannan misali, da abin kwaikwaya za a located a gefen dama na page, saman da kasa na image nesa da wannan.

Sanyã bango-size

Wani lokaci ya zama dole don a mike CSS bango ko rage girman. Don yin wannan, yi amfani da sifa bango-size, da kuma girman da bango za a iya kafa a pixels ko percentages, da kuma wani raka'a.

Tare da wannan sifa, akwai wasu matsaloli: for daidai nuni da wani bango a baya versions na browser kari kafin kalma da za a yi amfani da. Hakika, da na yanzu version cikakken goyon bayan wannan sifa da kuma bukatar takamaiman Properties bace.

Sanyã bango-da aka makala

Wannan sifa ƙayyade da hali na baya images yayin scrolling. Saboda haka, zai iya kai 3 dabi'u (ba ciki har da gada, jimlar ga dukkan halayen tattauna a wannan talifin):

• ajali - sa hoton a kan bango na gyarawa.
• gungura - bango littattafan da sauran abubuwa.
• gida - da image a kan bango da aka scrolled idan scrolling yana da abun ciki. Fage cewa ke bayan da abinda ke ciki da firam yana gyarawa.

Misali na yin amfani da:

jiki {bango-da aka makala gyarawa}.

A halin yanzu, Firefox ba ya goyon bayan da na karshe dukiya (gida).

Sanyã bango-asalin

Wannan sifa ne ke da alhakin sakawa kashi. Farkon bincike bukatar yin amfani da kari kafin kalma. A dukiya kanta tana uku sigogi:

• padding-akwatin tana wurinta dangi zuwa gefen juna, yayin da shan la'akari da kauri daga cikin firam.
• Iyakar-akwatin Properties daban-daban daga baya a cewa iyaka line iya zama gaba daya, ko partially zoba da juna;
• ciki-akwatin sakawa image pryavyazyvaya da abun ciki.

Idan ka saka mahara dabi'u, sa'an nan bincike zai iya amsa a kansu hanya: Firefox da kuma Opera gane kawai na farko zaɓi.

Sanyã bango-repeat

Kamar yadda mai mulkin, idan bango image aka kayyade, shi dole ne a maimaita horizontally ko tsaye. Domin wannan kuma yi amfani da sifa bango-sake. Saboda haka, block bango, CSS wanda ya ƙunshi irin wannan dukiya za a yi da daya daga dama sigogi:

• ba-sake - Hoton bayyana a kan wani page a guda version;
• maimaita - bango an maimaita a cikin x da kuma y;
• maimaita-x - kawai horizontally.
• maimaita-y - kawai tsaye.
• sarari - bango an maimaita, amma idan sarari ne ba zai yiwu ba a cika a tsakanin hotuna bayyana komai.
• zagaye - hoton da aka Riskar, idan shi ba ya cika dukan yankin na dukan hotuna.

Misali na da halayen:

jiki {bango-sake: no- sake maimaita} - kama da bango-sake: maimaita-y.

A CSS3 iya saka dabi'u ga mahara images lokacin jeri sigogi, rabu da wakafi.

Sanyã bango-clip

Wannan sifa ma'anar da hali na baya karkashin iyakokin (msl, a cikin hali na cike da gidajen gona Frames):

• padding-akwatin - bango nuna a cikin ciki na block.
• Iyakar-akwatin - Hoton zo a karkashin tsarin.
• ciki-akwatin - hoton a kan bango zai bayyana ne kawai a cikin ciki.

Misali na yin amfani da:

jiki {bango-clip: content- akwatin.}.

Chrom da kuma Safari bukatar -webkit- prefix.

Shirin hana haske halaye da tace

shirin hana haske sifa ba ka damar kafa da nuna gaskiya da bango - CSS dukiya zai yi aiki a duk bincike. The darajar da aka kafa a cikin kewayon daga 0.0 zuwa 1.0 m. A wannan yanayin, za ka iya saita nuna gaskiya da CSS bango babu lamba darajar maimakon 0.3 isa ya rubuta .3:

.block {bango-image: url ( img.png). shirin hana haske: .3.}.

Don saita bango shirin hana haske, CSS ya dace ko da na IE kasa ta tara version, amfani da tace sifa:

.block {bango-image: url ( img.png). tace: alpha (shirin hana haske = 30)}.

A wannan yanayin, da shirin hana haske darajar da aka kafa tsakanin 0 da 100. Note cewa shirin hana haske sanyã daban-daban nuna gaskiya saituna via RGBA gado: a lokacin da yin amfani da shirin hana haske ya bayyana ba kawai bango, amma kuma duk da abubuwa a cikin naúra.

Koyaushe saka idanu da amfani statistics for CIS bincike da kuma duk sauran ƙasashe. Babbar matsalar da duk DTP - mazan versions na IE, ba su ba ka damar amfani da cikakken har CSS3. A layout kar ka manta da amfani da musamman ayyuka da cewa duba ko browser goyon bayan wani CSS dukiya. Idan ba za ka iya shigar mazan versions na bincike, sami wani sabis ne da za a duba shafin aikin a mahara bincike online.