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Typography

Guidance for using and tuning typography.

Base components

Use Text and Heading components to render titles and body copy. These components share size and weight props and map to the underlying type system to ensure consistent typography throughout your app.

Typographic principles

The goal of typography is to relate font size, line height, and line width in a proportional way that maximizes beauty and makes reading easier and more pleasant.
<Heading mb="2" size="4">Typographic principles</Heading>

<Text>The goal of typography is to relate font size, line height, and line width in a proportional way that maximizes beauty and makes reading easier and more pleasant.</Text>

Formatting components

Compose formatting components to add emphasis, signal importance, present code and more.

The most important thing to remember is, stay positive.
<Text>

  The <Em>most</Em> important thing to remember is, <Strong>stay positive</Strong>.

</Text>

Type scale

The typographic system is based on a 9-step size scale. Every step has a corresponding font size, line height and letter spacing value which are all designed to be used in combination.

Aa
1
Aa
2
Aa
3
Aa
4
Aa
5
Aa
6
Aa
7
Aa
8
Aa
9
The quick brown fox jumps over the lazy dog.
<Text size="6">The quick brown fox jumps over the lazy dog.</Text>
StepSizeLetter spacingLine height
112px0.0025em16px
214px0em20px
316px0em24px
418px-0.0025em26px
520px-0.005em28px
624px-0.00625em30px
728px-0.0075em36px
835px-0.01em40px
960px-0.025em60px

Font weight

The following weights are supported. Weights can be customized to map to your own typeface.

LightRegularMediumBold
<Text size="6">

  <Flex direction="column">

    <Text weight="light">Light</Text>

    <Text weight="regular">Regular</Text>

    <Text weight="medium">Medium</Text>

    <Text weight="bold">Bold</Text>

  </Flex>

</Text>
WeightDefault value
Light300
Regular400
Medium500
Bold700

Font family

By default, Teasim Themes uses a system font stack for portability and legibility. Continue to the next section to learn about customizing your theme with a custom font.

TypeDefault value
Text-apple-system, BlinkMacSystemFont, 'Segoe UI (Custom)', Roboto, 'Helvetica Neue', 'Open Sans (Custom)', system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'
Code'Menlo', 'Consolas (Custom)', 'Bitstream Vera Sans Mono', monospace, 'Apple Color Emoji', 'Segoe UI Emoji'
Emphasis'Times New Roman', 'Times', serif
Quote'Times New Roman', 'Times', serif

Customization

Teasim Themes typography can be customized by overriding the corresponding CSS variables of the token system. Refer to the source code for the full list of the typographic tokens.

Make sure that your CSS is applied after the Teasim Themes styles so that it takes precedence.

Custom fonts

You can provide your own fonts, however, how you choose to import and serve them is up to you. It is only required that you specify your named fonts using the correct syntax.

To customize the font family used in your theme, remap the corresponding font-family tokens:

.themes {

  --default-font-family:  /* Your custom default font */ --heading-font-family: /* Your custom font for <Heading> components */ --code-font-family:

    /* Your custom font for <Code> components */ --strong-font-family: /* Your custom font for <Strong> components */ --em-font-family:

    /* Your custom font for <Em> components */ --quote-font-family: /* Your custom font for <Quote> components */;

}

With next/font

To load custom fonts via next/font, use the variable option to define a CSS variable name. Then, add that CSS variable class to your HTML document.

import { Inter } from "next/font/google";



const inter = Inter({

  subsets: ["latin"],

  display: "swap",

  variable: "--font-inter",

});



export default function RootLayout({ children }) {

  return (

    <html lang="en" className={inter.variable}>

      <body>{children}</body>

    </html>

  );

}

Finally, assign the CSS variable in your custom CSS:

.themes {

  --default-font-family: var(--font-inter);

}

Be aware that you may encounter css import order issues if you are running the app router. See common styling issues for more information.

Custom font weights

To customize the exact font weights used in your theme, remap the corresponding font-weight tokens to your own values:

.themes {

  --font-weight-light: 200;

  --font-weight-regular: 300;

  --font-weight-medium: 600;

  --font-weight-bold: 800;

}

Advanced settings

There’s a number of advanced typographic features that can be customized. These include a font size multiplier for certain components, font style, letter spacing, and leading trim. For example, you can customize the headings to render with a relatively larger font size than your default font, different leading trim values, and tighter letter spacing:

.themes {

  --heading-font-family: "Untitled Sans", sans-serif;

  --heading-font-size-adjust: 1.05;

  --heading-font-style: normal;

  --heading-leading-trim-start: 0.42em;

  --heading-leading-trim-end: 0.38em;

  --heading-letter-spacing: -0.01em;

}
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