> For the complete documentation index, see [llms.txt](https://docs.keycloakify.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keycloakify.dev/keycloakify/v10/customization-strategies/css-level-customization/using-custom-assets/plain-css.md).

# .css, .sass or .less

Let's see, as an example, the different ways you have to change the backgrounds image of the login page.

First let's [download a background image](https://coolbackgrounds.io/) an put it in our public directory:

<figure><img src="/files/u1i0bRZ7q9BOzEiRwwYL" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
If you wish to do so, you can hot swipe assets that you have placed into your public directory in your Keycloak instance files at:

**/opt/keycloak/themes/**[**\<name of your theme>**](/keycloakify/v10/configuration-options/themename.md)**/\<login|account>/resources/dist**

<img src="/files/czJJrujItRzbTYN4KMZn" alt="" data-size="original">
{% endhint %}

Let's apply this image to the body using plain CSS

{% code title="src/login/main.css" %}

```css
body.kcBodyClass {
  background: url(/background.png) no-repeat center center fixed;
}
```

{% endcode %}

We import the StyleSheet:

<pre class="language-tsx" data-title="src/login/KcPage.tsx"><code class="lang-tsx"><strong>import "./main.css";
</strong>import { Suspense, lazy } from "react";
// ...
</code></pre>

Result (see [testing your theme](/keycloakify/v10/testing-your-theme.md)):

<figure><img src="/files/SaemSmtkCGGgq8DcjNG0" alt=""><figcaption><p>Custom background successfully applied</p></figcaption></figure>

If you prefer, you can also move the background.png image from `public/` to, for examples, `src/login/assets/background.png` and reference the image with a path relative to the CSS file, in this case it would be:

{% code title="src/login/main.css" %}

```css
body.kcBodyClass {
  background: url(./assets/background.png) no-repeat center center fixed;
}
```

{% endcode %}

In the following video I show how to load different background for different page and how to create [theme variant](/keycloakify/v10/theme-variants.md).

{% embed url="<https://youtu.be/Nkoz1iD-HOA?si=hBXt8rw72-Pvhhnr>" %}


---

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