Should be so simple but it isn't doing it - background-colour on a div

Hello,

I want to achieve the below -  a white background in behind the featured items.  Should be simple, right?

I have been playing in the inspector, and using the below, I get the result I want:

div#yui_3_17_2_1_1669613693057_75 {
    background-color: white;
}

But when I put the change in the 'inject customs css' window, the change isn't applied.

Could someone help me please?

Best regards.

Can you share your website URL and the page this is on?

Hi @Ziggy,

It's on the home page:  

https://www.cleanplate.co.nz/

Thanks

Thanks heaps @tuanphan, I am learning tons.