Yuav ua li cas yuav ua rau ib daim ntawv ntaus ntawv hauv CSS?

Ua ib daim ntawv zoo nkauj hauv CSS, koj yuav tsum siv ntau tus qauv lus txib. Tab sis koj tuaj yeem siv cov kev xaiv uas tsis yog tus qauv, uas muab nthuav kev ntxim siab. Tus qauv piav qhia yog siv los ua ib ntu ntawm cov ntawv nyeem nruj me ntsis. CSS pab peb kom muab tus ntawv xa mus rau ib qho lus sib txuas los yog txawm tias ib tsab ntawv xwb. Yog hais tias koj tseem siv cov HTML cim npe mus cuag cov nyhuv no, koj yuav tsum rov pom koj cov kev xav hauv lub cajmeem, vim cascading style los xij muab rau koj ntau dua li kev tsim tawm. Peb yuav tham txog qee tus ntawm lawv hauv tsab ntawv no.

Kev cob qhia

Lub hom ntawv hom CSS tau muab siv txoj cai yooj yim: font-weight. Raws li tus nqi, koj tuaj yeem hais qhia ntau yam sib txawv. Piv txwv li, koj tuaj yeem sau qhov "font-weight: bold" vaj tse, uas txhais tau hais tias yog daim ntawv tuab tuab. Tus nqi them yog "normal". Ntxiv rau cov lus tseem ceeb, koj tuaj yeem siv cov zauv yooj yim. Cov koog raws li ntawm 100 mus txog 900, qhov twg 400 sib haum rau qhov "normal". Thiab qhov no txhais tau hais tias yog koj teev tus nqi rau tsawg dua 400, tus font yuav plam nws kev tuaj yeem, thiab yog tias ntau dua, nws yuav tau txais kev saib roj. Qhov no ua rau koj manually kho cov qauv qhia.

Nyob rau hauv CSS, ib daim font font tau muab tso raws li niam txiv keeb. Hauv cov ntxhuav cascading, muaj ob nqe lus txib ("bolder" thiab "lighter"), uas tuaj yeem ua tau lossis txo qhov kev tuaj yeem ua qauv ntawm cov qauv. Tus nqi yuav txawv nyob ntawm niam txiv lub npe. Cov ntawv "font-weight" yuav muab sau rau hauv daim ntawv luv luv - "font", qhov twg koj tuaj yeem sau tag nrho tus yam ntxwv ntawm daim ntawv.

Lub hom phiaj

Koj tuaj yeem cob qhov CSS font rau cov HTML lossis XHTML caij. Cov nyhuv yuav pom tsuas yog tias daim ntawv muaj cov ntawv nyeem. Hauv HTML, nws muaj ib qho analog ntawm "vaj huam sib luag" nyhav. Yog tias koj sau cov lus ntawm cov tags, nws yuav dhau los ua ntau dua. Nws cov cuab yeej zoo tib yam rau qhov nqi ntawm "bold". Qee cov neeg tsim khoom tsis pom qhov txawv ntawm qhov tag thiab CSS bold font. Tab sis muaj ntau qhov txawv. Lub cim tau nws lub ntsiab lus, nws yog siv rau cov ntaub ntawv tseem ceeb. Ib qho cuab yeej CSS yog ib qho khoom siv zoo nkauj siv los kho daig ntawv. Cia qhov txawv yog tsis muaj thaum nyeem ntawv, tab sis, raws li qhia los ntawm ib tug Consortium ntawm lub ntiaj teb no dav Web site, nws yuav tsum sawv ntsug nyob rau hauv lawv qhov chaw. Qhov kev txiav txim hauv tsab cai no yuav ua rau koj lub neej muaj zog ntxiv. Tom qab tag nrho, nws tsis deb tawm ntawd lub sijhawm thaum browsers yuav kawm siv lwm txoj kev los ntawm cov ntawv nyeem, qhov twg lub ntsiab lus ntawm cov ntsiab lus zoo nkauj thiab cov ntsiab lus yuav tseem ceeb. Tsis nco qab txog qhov no thaum tsim koj tus kheej cov nplooj ntawv.