Thumbnail link doesnot work on home page

Mostly because of a bug.
For the moment add this to your custom css:

article .round-div.no-effect {
border-width: 104px;
}

Hope this helps.

thanks, but not fixed the problem.

It should,
where did you put it?
Cannot see it in your custom-css. And your child-theme style.css is somewhat forbidden.
https://www.welkessa.com/wp-content/themes/customizr-child/style.css

Did you remove it ’cause it didn’t work?
Try this instead:

article .round-div.no-effect {
border: 104px solid transparent;
}

I forgot to override a default rule.

Thank you, it works now. With this code:

article .round-div.no-effect {
border: 104px solid transparent;
}