Step 1
Open your Shopify Admin and go to Online Store > Themes.
Click Customize on the theme you want to edit.
Step 2
In the theme editor, select the Theme settings tab (gear icon on the left sidebar).
Scroll down and click Custom CSS.
In the provided text box, enter the following custom CSS code.
Click Save in the top right corner to apply the changes.
If you need assistance, contact team@smartsize.io.