What are some common causes of "unsupported pseudo-selector" errors in CSS, and how can I address them?

Question

Grade: Education Subject: Support

Asked by: USER2478

103 Viewed 103 Answers

Answer (103)

USER6169

Best Answer

(503)

"Unsupported pseudo-selector" errors arise when you use a pseudo-selector that is either not defined in the CSS specification or not implemented by the browser you're using. Examples include using deprecated pseudo-selectors, typos, or attempting to use CSS4/CSS5 features in older browsers. To address this, ensure your pseudo-selectors are valid and supported by the target browsers. Check the browser compatibility tables on websites like MDN Web Docs to verify support for specific pseudo-selectors.

Answered on 29 Agustus 2025

What are some common causes of "unsupported pseudo-selector" errors in CSS, and how can I address them?

Question

Answer (103)

Related Articles

doamna batrana ,ce functie are batrana​

The major factor controlling weather is _____

tentukan hasil bagi 4x pangkat 3 + 12 xpangkat2 -x - 15

cuvântul subliniat în versul și toți copiii dormeau inca tun este folosit cu sensul a) propriu de bază b)propriu secundar c)figurat

8[tex] \frac{x}{12} = \frac{x}{13} - 9[/tex]

Seorang tukang kayu membuat ukuran bingkai jendela lebih besar dari pada kaca jendela. Hal ini dimaksud agar pada siang hari..... A.bingkai menjadi kokoh B.kaca tidak melengkung C.kaca tidak mudah retak D.cahaya mudah masuk lewat celah (Pliss...jawabbbbb.....)

what are three complex fractions that equal 1/4

menurut karl marx,pada umumnya pemilik modal menjauhkan buruh pabriknya dari teman dan produk yang dihasilkan .hal tersebut merupakan gejala..a.deprivasib.kelas sosialc.alienasid.objektivasie.nilai lebih

Rezolvati ecuatia ||2x-3|-8|=11, X apartine Z

Write the function in vertex form. y = 2x² + x

Can I calculate the SEM without using the `sem` function in MATLAB?

intro curte alearga iepuride casa si gaini in total 60 de capete si 166 de piciore cati iepuri si cati gaini sunot.

Can I use a font generator website to create Instagram posts with Comic Sans?

doamna batrana ,ce functie are batrana

cuvântul subliniat în versul și toți copiii dormeau inca tun este folosit cu sensul a) propriu de bază
b)propriu secundar
c)figurat

8
[tex] \frac{x}{12} = \frac{x}{13} - 9[/tex]

Seorang tukang kayu membuat ukuran bingkai jendela lebih besar dari pada kaca jendela. Hal ini dimaksud agar pada siang hari.....
A.bingkai menjadi kokoh
B.kaca tidak melengkung
C.kaca tidak mudah retak
D.cahaya mudah masuk lewat celah
(Pliss...jawabbbbb.....)

menurut karl marx,pada umumnya pemilik modal menjauhkan buruh pabriknya dari teman dan produk yang dihasilkan .hal tersebut merupakan gejala..
a.deprivasi
b.kelas sosial
c.alienasi
d.objektivasi
e.nilai lebih

Write the function in vertex form.

y = 2x² + x