I installed the "Buy Button" widget (if that's what it's called) in the Admin and I dont know where to place the copied HTML code. When I add it to the bottom of theme.scss.liquid, the theme design gets all out of whack. The instructions on the widget says to add the code to the HTML page I want to add the button, but I want the button on all pages that contain products. Is this the only way to do it? I like this way because I can change the color and size of the button with this widget. I can't do it in the normal theme editor. I don't know a lot but I'm trying. Thanks.
Sorry you are facing this issue, it would be my pleasure to help you.
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Thanks for your good question.
Please share your site URL,
I will check out the issue and provide you a solution here.
It can be done by doing some code customization. please send me a personal message and we can discuss what you'd like