freeCodeCamp/guide/english/css/fonts/index.md

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Fonts

Fonts

The CSS font properties define the font family, weight, size, variant, line height and style of a text.

Font family

The font family of a text is simply set by using the font-family property.

It works with a fallback system, if your browser does not support the first font, it tries with the next one and so on. If the name of the font is more than one word it must be surrounded by quotes.

p {
    font-family: "Times New Roman", Times, serif;   
}

In the above example, "Times New Roman" is the of the font, while "serif" is the . Generic names are used as a fallback mechanism for preserving style if the family-name is unavailable. A generic name should always be the last item in the list of font family names. Generic family names are serif, sans-serif, monospace, cursive, fantasy, system-ui.

Font style

The font-style property can be used to specify italic text.

This property has 3 values:

  • normal - Text shown normally
  • italic - Text shown in italic
  • oblique - Text shown leaning
.normal {
    font-style: normal;
} 

.italic {
    font-style: italic;
}

.oblique {
    font-style: oblique;
}

Font size

The font-size property sets the size of the text.

There are different types of font size values:

  • px (pixels) - The default size of text being 16px
  • em - 1em = the current font size, so 1em = 16px (recommended by the W3C)
  • small, medium, large - known as absolute size values
  • % - percentages
.with-pixels {
    font-size: 14px;
}

.with-ems {
    font-size: 0.875em;
}

.with-absolute {
    font-size: large;
}

.with-percentage {
    font-size: 80%;
}

Font weight

The font-weightproperty specifies the weight (or boldness) of the font. Accepts keywords (bold, normal, bolder, lighter) or numeric keywords (100, 200, 300, 400 etc.) 400 is the same as normal.

p {
   font-weight: bold
}

Font responsiveness

The text size can be set with a vw(viewport width) unit. That way the text size will follow the size of the browser window.

<h1 style="font-size:10vw">Hello World</h1>

Viewport is the browser window size. 1vw = 1% of viewport width. If the viewport is 50cm wide, 1vw is 0.5cm.

Font variant

The font-variant property specifies if a text should be displayed in a small-caps font (where all lowercase letters are converted to uppercase letters while appearing in a smaller font-size than the original uppercase letters in the text).

p.small {
  font-variant: small-caps;
}

Font shorthand property

Font properties can be specified with the shorthand font. It takes as value (in this order):

  • font-style (optional)
  • font-variant (optional)
  • font-weight (optional)
  • font-size (mandatory)
  • line-height (optional)
  • font-family (mandatory)
p {
  font: italic small-caps 800 20px/1.5 Arial;
}

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