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CSS font properties define the font family, boldness, size, and the style of a text.
On computer screens,
sans-serif fonts are considered easier to read than serif fonts.
In CSS, there is two types of font family names:
| Generic family | Font family | Description |
|---|---|---|
| Serif | Times
New Roman Georgia |
Serif fonts have small lines at the ends on some characters |
| Sans-serif | Arial Verdana |
"Sans" means without - these fonts do not have the lines at the ends of characters |
| Monospace | Courier
New Lucida Console |
All monospace characters has the same width |
The font family of a text is set with the font-family property.
The font-family property can hold several font names as a "fallback" system. If the browser does not support the first font, it tries the next font.
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.
Note: If the name of a font family is more than one word, it must be in quotation marks, like font-family: "Times New Roman".
More than one font family is specified in a comma-separated list:
Example
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The font-style property is mostly used to specify italic text.
This property has three values:
Example
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The font-size property sets the size of the text.
Being able to manage the text size is important in web design. However, you should not use font size adjustments to make paragraphs look like headings, or headings look like paragraphs.
Always use the proper HTML tags, like <h1> - <h6> for headings and <p> for paragraphs.
The font-size value can be an absolute, or relative size.
Absolute size:
Relative size:
If you do not specify a
font size, the default size for normal text, like paragraphs, is 16px
(16px=1em).
Setting the text size with pixels, gives you full control over the text size:
Example
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The example above allows Firefox, Chrome, and Safari to resize the text, but not Internet Explorer.
The text can be resized in all browsers using the zoom tool (however, this resizes the entire page, not just the text).
To avoid the resizing problem with Internet Explorer, many developers use em instead of pixels.
The em size unit is recommended by the W3C.
1em is equal to the current font size. The default text size in browsers is 16px. So, the default size of 1em is 16px.
The size can be calculated from pixels to em using this formula: pixels/16=em
Example
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In the example above, the text size in em is the same as the previous example in pixels. However, with the em size, it is possible to adjust the text size in all browsers.
Unfortunately, there is still a problem with IE. When resizing the text, it becomes larger than it should when made larger, and smaller than it should when made smaller.
The solution that works in all browsers, is to set a default font-size in percent for the body element:
Example
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Our code now works great! It shows the same text size in all browsers, and allows all browsers to zoom or resize the text!
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More Examples |
Set the
boldness of the font
This example demonstrates how to set the boldness of
a font.
Set the
variant of the font
This example demonstrates how to set the variant of a
font.
All the font
properties in one declaration
This example demonstrates how to use the
shorthand property for setting all of the font properties in one
declaration.
The number in the "CSS" column indicates in which CSS version the property is defined (CSS1 or CSS2).
| Property | Description | Values | CSS |
|---|---|---|---|
| font | Sets all the font properties in one declaration | font-style font-variant font-weight font-size/line-height font-familycaption icon menu message-box small-caption status-bar inherit |
1 |
| font-family | Specifies the font family for text | family-name generic-familyinherit |
1 |
| font-size | Specifies the font size of text | xx-small x-small small medium large x-large xx-large smaller larger length %inherit |
1 |
| font-style | Specifies the font style for text | normal italic oblique inherit |
1 |
| font-variant | Specifies whether or not a text should be displayed in a small-caps font | normal small-caps inherit |
1 |
| font-weight | Specifies the weight of a font | normal bold bolder lighter 100 200 300 400 500 600 700 800 900 inherit |
1 |
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