CSS Web Fonts
Web fonts allow Web designers to use fonts that are not installed on the user’s computer.
When you have found/bought the font you wish to use, just include the font file on your web server, and it will be automatically downloaded to the user when needed.
Your «own» fonts are defined within the CSS @font-face rule.
Different Font Formats
TrueType Fonts (TTF)
TrueType is a font standard developed in the late 1980s, by Apple and Microsoft. TrueType is the most common font format for both the Mac OS and Microsoft Windows operating systems.
OpenType Fonts (OTF)
OpenType is a format for scalable computer fonts. It was built on TrueType, and is a registered trademark of Microsoft. OpenType fonts are used commonly today on the major computer platforms.
The Web Open Font Format (WOFF)
WOFF is a font format for use in web pages. It was developed in 2009, and is now a W3C Recommendation. WOFF is essentially OpenType or TrueType with compression and additional metadata. The goal is to support font distribution from a server to a client over a network with bandwidth constraints.
The Web Open Font Format (WOFF 2.0)
TrueType/OpenType font that provides better compression than WOFF 1.0.
SVG Fonts/Shapes
SVG fonts allow SVG to be used as glyphs when displaying text. The SVG 1.1 specification define a font module that allows the creation of fonts within an SVG document. You can also apply CSS to SVG documents, and the @font-face rule can be applied to text in SVG documents.
Embedded OpenType Fonts (EOT)
EOT fonts are a compact form of OpenType fonts designed by Microsoft for use as embedded fonts on web pages.
Browser Support for Font Formats
The numbers in the table specifies the first browser version that fully supports the font format.
| Font format | |||||
|---|---|---|---|---|---|
| TTF/OTF | 9.0* | 4.0 | 3.5 | 3.1 | 10.0 |
| WOFF | 9.0 | 5.0 | 3.6 | 5.1 | 11.1 |
| WOFF2 | 14.0 | 36.0 | 39.0 | 10.0 | 26.0 |
| SVG | Not supported | Not supported | Not supported | 3.2 | Not supported |
| EOT | 6.0 | Not supported | Not supported | Not supported | Not supported |
*IE: The font format only works when set to be «installable».
Using The Font You Want
In the @font-face rule; first define a name for the font (e.g. myFirstFont) and then point to the font file.
Tip: Always use lowercase letters for the font URL. Uppercase letters can give unexpected results in IE.
To use the font for an HTML element, refer to the name of the font (myFirstFont) through the font-family property:
Example
@font-face <
font-family: myFirstFont;
src: url(sansation_light.woff);
>
div font-family: myFirstFont;
>
Using Bold Text
You must add another @font-face rule containing descriptors for bold text:
Example
The file «sansation_bold.woff» is another font file, that contains the bold characters for the Sansation font.
Browsers will use this whenever a piece of text with the font-family «myFirstFont» should render as bold.
This way you can have many @font-face rules for the same font.
CSS Font Descriptors
The following table lists all the font descriptors that can be defined inside the @font-face rule:
| Descriptor | Values | Description |
|---|---|---|
| font-family | name | Required. Defines a name for the font |
| src | URL | Required. Defines the URL of the font file |
| font-stretch | normal condensed ultra-condensed extra-condensed semi-condensed expanded semi-expanded extra-expanded ultra-expanded | Optional. Defines how the font should be stretched. Default is «normal» |
| font-style | normal italic oblique | Optional. Defines how the font should be styled. Default is «normal» |
| font-weight | normal bold 100 200 300 400 500 600 700 800 900 | Optional. Defines the boldness of the font. Default is «normal» |
| unicode-range | unicode-range | Optional. Defines the range of UNICODE characters the font supports. Default is «U+0-10FFFF» |
CSS Fonts
Choosing the right font for your website is important!
Font Selection is Important
Choosing the right font has a huge impact on how the readers experience a website.
The right font can create a strong identity for your brand.
Using a font that is easy to read is important. The font adds value to your text. It is also important to choose the correct color and text size for the font.
Generic Font Families
In CSS there are five generic font families:
- Serif fonts have a small stroke at the edges of each letter. They create a sense of formality and elegance.
- Sans-serif fonts have clean lines (no small strokes attached). They create a modern and minimalistic look.
- Monospace fonts — here all the letters have the same fixed width. They create a mechanical look.
- Cursive fonts imitate human handwriting.
- Fantasy fonts are decorative/playful fonts.
All the different font names belong to one of the generic font families.
Difference Between Serif and Sans-serif Fonts
Note: On computer screens, sans-serif fonts are considered easier to read than serif fonts.
Some Font Examples
| Generic Font Family | Examples of Font Names |
|---|---|
| Serif | Times New Roman Georgia Garamond |
| Sans-serif | Arial Verdana Helvetica |
| Monospace | Courier New Lucida Console Monaco |
| Cursive | Brush Script MT Lucida Handwriting |
| Fantasy | Copperplate Papyrus |
The CSS font-family Property
In CSS, we use the font-family property to specify the font of a text.
Note: If the font name is more than one word, it must be in quotation marks, like: «Times New Roman».
Tip: The font-family property should hold several font names as a «fallback» system, to ensure maximum compatibility between browsers/operating systems. Start with the font you want, and end with a generic family (to let the browser pick a similar font in the generic family, if no other fonts are available). The font names should be separated with comma. Read more about fallback fonts in the next chapter.
Example
Specify some different fonts for three paragraphs:
.p1 <
font-family: «Times New Roman», Times, serif;
>
.p2 font-family: Arial, Helvetica, sans-serif;
>
.p3 font-family: «Lucida Console», «Courier New», monospace;
>