How can I adjust the width of the product description column in Refresh 13.0.1 theme?

[RMTPerformance]

Hi everyone,
I'd like to change the width of the Product Description column in our Refresh 13.0.1 THEME at www.rmtperformance.com. Any ideas or suggestions are appriciated.

Here is an example. As you can see, this can cause some issues as the text is very hard to read - https://lujxpd51p80kj1ig-80586113371.shopifypreview.com/products_preview?preview_key=85b4ac583d28fee...

Warm Regards,
RMT.

[RMTPerformance]

For context I am using a custom theme template for this particular product. However I could always use the Default Theme Template and just adjust the size of that as it wouldn't be a negative to change the width for all our products for easier reading.

[PageFly-Henry]

Hi @RMTPerformance 

This is Henry from PageFly - Landing Page Builder App

You can try this code by following these steps: 

Step 1: Go to Online Store->Theme->Edit code.

Step 2: Search file base.css

Step 3: Paste the below code at bottom of the file -> Save

.product__description p span,

.product__description li {

    font-size: 16px !important;

}

Hope that my solution works for you.

Best regards,

Henry | PageFly

[RMTPerformance]

Hi Henry, thanks for that super helpful. I actually managed to fix the font-size myself.
However the width still being an issue as you can see from the screenshot below, it makes the videos super small.

If you have any ideas that would be great, if not. Not a problem at all!
- https://lujxpd51p80kj1ig-80586113371.shopifypreview.com/products_preview?preview_key=110a669ad02ce83...