> For the complete documentation index, see [llms.txt](https://uxsmart.gitbook.io/velare/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://uxsmart.gitbook.io/velare/customize-your-pages/custom-css.md).

# Custom CSS

Custom CSS lets you add your own stylesheet rules to override or extend the theme's default design. It is meant for people who already write CSS, and it is the last resort: use the theme settings and section settings first, and only come here when what you need genuinely does not exist as a setting. The advantage is that your rules live in the theme settings instead of in edited theme files, so you get precise control over appearance without touching the theme's core code.

{% hint style="info" %}
Custom CSS is not covered by theme support. Rules you write here are your own code, and they can stop working or break the layout after a theme update, when the underlying markup and class names change. Keep a copy of anything you add, and recheck it after every update.
{% endhint %}

### Where to find these settings <a href="#where-to-find-these-settings" id="where-to-find-these-settings"></a>

Go to **Online Store > Themes > Customize > Theme settings > Custom CSS**.

<figure><img src="/files/r556ZAQOQeV1EhqU4Hxj" alt=""><figcaption></figcaption></figure>

### What customers see <a href="#what-customers-see" id="what-customers-see"></a>

Whatever your rules target. The Custom CSS box in Theme settings applies storefront-wide: your rules affect every existing feature or element that matches the selectors you write, on any page where those elements appear. Because this is plain CSS applied on top of the theme, a small selector mistake can affect far more of the storefront than you intended, so preview on both desktop and mobile before publishing.

### Related pages <a href="#related-pages" id="related-pages"></a>

* [Colors](/velare/set-up-your-store/colors.md): change colors here first, before writing any CSS
* [Typography](/velare/set-up-your-store/typography.md): fonts and sizes that are already configurable without code
* [Layout](/velare/set-up-your-store/layout.md): page width and corner radius, the two things most often targeted with custom CSS
* [Vélare Intro](/velare/readme.md): overview of the theme and where to start


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