CSS for removing background on variable products

Hi there,

Would really appreciate some help on this as have been stuck on it for a while now.

I am using trying to add CSS to remove the background colour on variable product options, and found the following CSS online:

/*swatch titles*/
selector td{
    background-color: transparent;
    color: black;
    padding: 0px;
}

However, this only removed the background for the ‘memory size’, and the variation titles still have a grey background to them.

How can I make the background colour to these variation titles the same?

Also, I am try to reduce the line size between the variations themselves.

I tried the following:

/*swatch titles*/
selector td{
    background-color: transparent;
    color: black;
    padding: 0px;
    line-height: 80%;
}

Here is the link to my website if you could please have a look :

https://www.oureco.co.uk/?elementor_library=single-product-template&preview_id=2040&preview_nonce=5a5c22d4fe&preview=true

Many thanks for any help,

R