font-style - CSS: Cascading Style Sheets 编辑

The font-style CSS property sets whether a font should be styled with a normal, italic, or oblique face from its font-family.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Italic font faces are generally cursive in nature, usually using less horizontal space than their unstyled counterparts, while oblique faces are usually just sloped versions of the regular face. When the specified style is not available, both italic and oblique faces are simulated by artificially sloping the glyphs of the regular face (use font-synthesis to control this behavior).

Syntax

font-style: normal;
font-style: italic;
font-style: oblique;
font-style: oblique 10deg;

/* Global values */
font-style: inherit;
font-style: initial;
font-style: unset;

The font-style property is specified as a single keyword chosen from the list of values below, which can optionally include an angle if the keyword is oblique.

Values

normal

Selects a font that is classified as normal within a font-family.

italic

Selects a font that is classified as italic. If no italic version of the face is available, one classified as oblique is used instead. If neither is available, the style is artificially simulated.

oblique

Selects a font that is classified as oblique. If no oblique version of the face is available, one classified as italic is used instead. If neither is available, the style is artificially simulated.

oblique <angle>

Selects a font classified as oblique, and additionally specifies an angle for the slant of the text. If one or more oblique faces are available in the chosen font family, the one that most closely matches the specified angle is chosen. If no oblique faces are available, the browser will synthesize an oblique version of the font by slanting a normal face by the specified amount. Valid values are degree values of -90deg to 90deg inclusive. If an angle is not specified, an angle of 14 degrees is used. Positive values are slanted to the end of the line, while negative values are slanted towards the beginning.

In general, for a requested angle of 14 degrees or greater, larger angles are prefered; otherwise, smaller angles are preferred (see the spec's font matching section for the precise algorithm).

Variable fonts

Variable fonts can offer a fine control over the degree to which an oblique face is slanted. You can select this using the <angle> modifier for the oblique keyword.

For TrueType or OpenType variable fonts, the "slnt" variation is used to implement varying slant angles for oblique, and the "ital" variation with a value of 1 is used to implement italic values. See font-variation-settings.

For the example below to work, you'll need a browser that supports the CSS Fonts Level 4 syntax in which font-style: oblique can accept an <angle>.

HTML

<header>
    <input type="range" id="slant" name="slant" min="-90" max="90" />
    <label for="slant">Slant</label>
</header>
<div class="container">
    <p class="sample">...it would not be wonderful to meet a Megalosaurus, forty feet long or so, waddling like an elephantine lizard up Holborn Hill.</p>
</div>

CSS

/*
AmstelvarAlpha-VF is created by David Berlow (https://github.com/TypeNetwork/Amstelvar)
and is used here under the terms of its license:
https://github.com/TypeNetwork/Amstelvar/blob/master/OFL.txt
*/

@font-face {
  src: url('https://mdn.mozillademos.org/files/16044/AmstelvarAlpha-VF.ttf');
  font-family:'AmstelvarAlpha';
  font-style: normal;
}

label {
  font: 1rem monospace;
}

.container {
  max-height: 150px;
  overflow: scroll;
}

.sample {
  font: 2rem 'AmstelvarAlpha', sans-serif;
}

html, body {
  max-height: 100vh;
  max-width: 100vw;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
}

header {
  margin-bottom: 1.5rem;
}

.container {
  flex-grow: 1;
}

.container > p {
  margin-top: 0;
  margin-bottom: 0;
}

JavaScript

let slantLabel = document.querySelector('label[for="slant"]');
let slantInput = document.querySelector('#slant');
let sampleText = document.querySelector('.sample');

function update() {
  let slant = `oblique ${slantInput.value}deg`;
  slantLabel.textContent = `font-style: ${slant};`;
  sampleText.style.fontStyle = slant;
}

slantInput.addEventListener('input', update);

update();

Accessibility concerns

Large sections of text set with a font-style value of italic may be difficult for people with cognitive concerns such as Dyslexia to read.

• MDN Understanding WCAG, Guideline 1.4 explanations
• W3C Understanding WCAG 2.1

Formal definition

Initial value	normal
Applies to	all elements. It also applies to ::first-letter and ::first-line.
Inherited	yes
Computed value	as specified
Animation type	discrete

Formal syntax

normal | italic | oblique <angle>?

Examples

Font styles

<p class="normal">This paragraph is normal.</p>
<p class="italic">This paragraph is italic.</p>
<p class="oblique">This paragraph is oblique.</p>

.normal {
  font-style: normal;
}

.italic {
  font-style: italic;
}

.oblique {
  font-style: oblique;
}

Specifications

Specification	Status	Comment
CSS Fonts Module Level 4 The definition of 'font-style' in that specification.	Working Draft	Adds the ability to specify an angle after oblique
CSS Fonts Module Level 3 The definition of 'font-style' in that specification.	Recommendation	No change
CSS Level 2 (Revision 1) The definition of 'font-style' in that specification.	Recommendation	No change
CSS Level 1 The definition of 'font-style' in that specification.	Recommendation	Initial definition

Browser compatibility

BCD tables only load in the browser

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

See also

• font-style
• font-weight
• Fundamental text and font styling