Add Custom code/CSS correctly
Learn where to add your Custom code/ CSS so you won't lose them whenver updating to the latest theme version
File assets/custom.css.liquid: Add Custom CSS here.
File snippets/custom-code-head.liquid: Add Custom Code such as tracking script, meta tag before closing tag </head>.
File snippets/custom-code-body.liquid: Add Custom Code such as tracking script before closing tag </body>.
If you made any customizations in these files:
"For any files generated by a third-party app or custom code developed by merchants or development teams;
theme.liquid snippets;
you'll need to manually transfer the custom code/CSS to the updated theme. Unfortunately, Shopify doesn't offer a workaround for this."
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