Why can't I add background images via CSS anymore?

[Ruben__Nunez]

I'm not able to add background images via css to shopify anymore. I use to do it like this, but its no longer working:

.use-alt-bg {
background-image: url("https://cdn.shopify.com/s/files/1/0373/5420/9339/files/thin-banner.jpg");
background-position: center;
background-repeat: no-repeat;
background-size: cover;
}

In the inspector, I see the following attached. 

When I add that, 

[oscprofessional]

@Ruben__Nunez ,

Please share the store URL...

[GemPages]

Hi @Ruben__Nunez,

It's the GemPages Support Team and we are glad to assist you today!

Could you please share your store URL ( with the password if your store password is enabled ) then I can see and suggest something for you?

Best regards,
GemPages Support Team