How to add a border to tables in Streamline theme?

[YOLO10]

We're using streamline theme and have various tables throughout our site (product pages / delivery / FAQs etc). How can I add a border to these tables? Thanks

[webwondersco]

@YOLO10 Could you please share your store URL? so can check and guide you accordingly. 

[YOLO10]

Sure, it's https://www.simplyhammocks.co.uk/ Thanks!

[webwondersco]

@YOLO10 Please add the below line of CSS code at the end of your theme.css file

body table, body td{
border:1px solid #000;
}

Result:

[YOLO10]

Thanks! I can see theme.css.liquid - is this the correct place? Thanks

[webwondersco]

@YOLO10 Yes correct, just paste given code at the end of that file and save