child theme

Maybe your hosting providers are caching your website – to explore this try adding something obvious in your Child Theme style.css file and see if it appears on your site. Like:

body {
 border: 10px solid red !important;
}

yea not showing anything .
hosting providers are caching your website
What does that mean ? & how to solve this?

You need to ask your hosting providers whether they are caching your website and then ask them to stop if they are.

i asked them but they havent replied me yet ,
but any changes made to parent theme are perfectly showing in website .
The problem is with only child theme.

Okay looks like your style.css file doesn’t exist here:
https://cardmart.tk/wp-content/themes/virtue-child/style.css

Where did you make your Child Theme? Above you said your child theme folder name was “virtuechild” but then your style.css file points to “virtue-child”?

sorry , i renamed it after posting , i thought maybe hyphen creating some issues , But i made this change in style.css too

Sorry what I meant was, your Child Theme style.css file cannot be found here:
https://cardmart.tk/wp-content/themes/virtue-child/style.css

Can you triple-check the directory structure where you think your Child Theme style.css file is, then compare it to that URL I’ve just posted?

https://cardmart.tk/wp-content/themes/virtuechild/style.css
here

So are there 2 folders in the “themes/” folder, one called “virtuechild” and one called “virtue-child”?

no sir, just one folder with name virtuechild

How did you create your Child Theme, were you following a guide? Which guide?

oh i am really sorry for the trouble sir , when i renamed the theme , i didnt activate the renamed theme from dashboard.
now i have 2 themes with virtuechild & virtue-child with one folder virtuechild.
I am really sorry.
Thank you !

Do the issues persist if you activate the “virtuechild” theme?

Yes ,
My header menu and footer columns not appearing

If you put this in your style.css file, does a red border appear:

body {
 border: 10px solid red !important;
}

?