Why doesn't the border color change when a size is selected?

[basicbastardco]

Hi Guys,

I am reaching out regarding an issue with the border color on the product page. When a size is selected, the border color does not change to solid black as intended. I have attached a photo for reference. I would appreciate if you can help. Thanks in advance. 

URL: https://basicbastard.co/products/basic-sweater-green?variant=43547104608492

[ZestardTech · Accepted solution]

Hello There,

1. In your Shopify Admin go to online store > themes > actions > edit code
2. Find Asset -> base.css and paste this at the Top of the file:

.product .product__info-wrapper .product-form__input input[type=radio]:checked + label {
  border-color: black;
}

[ZestardTech]

Thank you for your response. It's good to know that it's worked for you. Kindly feel free to get back to me if you need any further assistance.