How do I hide the sale icons?

 The following steps will walk you through how to remove the sale icons but leave the sale pricing intact. This is a 2-minute change that will work on all of the Underground Shopify themes.

Step 1

In your Shopify Admin click on Themes > Customize Theme > Actions > Edit Code 

Step 2

On the next page from the folders on the left choose  assets > stylesheet.css.liquid. Scroll to the bottom of the page and paste in the following code.

.sale-item { display: none; }

Click save when done.