# Adding custom CSS Source: https://support.storeconnect.com/articles/adding-custom-css · Last modified 21 August 2026 There are several ways to customize your StoreConnect store's CSS. Which one suits you depends on how much CSS you have and how often it changes. ## On this page 1. [Add CSS to the Custom Styles field](#add-css-to-the-custom-styles-field) 2. [Use style blocks to upload your CSS](#use-style-blocks-to-upload-your-css) 3. [How to add CSS theme assets](#how-to-add-css-theme-assets) 4. [How to add CSS using content blocks](#how-to-add-css-using-content-blocks) 5. [Third party CSS libraries](#third-party-css-libraries) ## Which method to use | Method | Use it for | Where it renders | | --- | --- | --- | | [Custom Styles field](#add-css-to-the-custom-styles-field) | Small tweaks, and quick checks while developing a theme | ``, in a `