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Custom Stylesheets


Reflex allows you to add custom stylesheets. Simply pass the URLs of the stylesheets to rx.App:
app = rx.App(
    stylesheets=[
        "https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css",
    ],
)

Local Stylesheets


You can also add local stylesheets. Just put the stylesheet under assets/ and pass the path to the stylesheet to rx.App:
app = rx.App(
    stylesheets=[
        "styles.css",  # This path is relative to assets/
    ],
)

Fonts


You can take advantage of Reflex's support for custom stylesheets to add custom fonts to your app.
Then you can use the font in your app by setting the font_family prop.
In this example, we will use the IBM Plex Mono font from Google Fonts.

Check out my font

rx.text(
    "Check out my font",
    font_family="IBM Plex Mono",
    font_size="1.5em",
)

Local Fonts


By making use of the two previous points, we can also make a stylesheet that allow you to use a font hosted on your server.
If your font is called MyFont.otf, copy it in assets/fonts
Now we have the font ready, let's create the stylesheet myfont.css
@font-face {
    font-family: MyFont;
    src: url("MyFont.otf") format("opentype");
}

@font-face {
    font-family: MyFont;
    font-weight: bold;
    src: url("MyFont.otf") format("opentype");
}
Add the reference to your new Stylesheet in your App
app = rx.App(
    stylesheets=[
        "fonts/myfont.css",  # This path is relative to assets/
    ],
)
And that's it! You can now use MyFont like any other FontFamily to style your components
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