CSS Attributes Index   Font Attributes

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Sets or retrieves the boldness of the object’s text.

CSS	{ font-weight: 'normal' | 'bold' | 'bolder' | 'lighter' | '100' | '200' | '300' | '400' | '500' | '600' | '700' | '800' | '900' }
Script	object.style.fontWeight = sWeight ]

normal	The font is normal.
bold	The font is bold.
bolder	The font is heavier than normal bold.
lighter	The font is lighter than normal.
100	The font is at least as light as the 200 weight.
200	The font is at least as bold as the 100 weight and at least as light as the 300 weight.
300	The font is at least as bold as the 200 weight and at least as light as the 400 weight.
400	The font is normal.
500	The font is at least as bold as the 400 weight and at least as light as the 600 weight.
600	The font is at least as bold as the 500 weight and at least as light as the 700 weight.
700	The font is bold.
800	The font is at least as bold as the 700 weight and at least as light as the 900 weight.
900	The font is at least as bold as the 800 weight.

The property is read/write with a default value of normal; the cascading stylesheet ( CSS ) attribute is inherited.

The key words for font-weight values are mapped to specific font variations depending on the fonts that are installed on the user's computer. In many cases, the user will not see the difference between different font-weight settings because the system will choose the closest match.

Setting the font-weight to 400 is equivalent to normal, and 700 is equivalent to bold. A font-weight of bolder or lighter is interpreted relative to the parent object’s weight. A value of bolder for text whose parent is normal would set the text to bold.

Microsoft^® Internet Explorer^® 4.0 supports only normal and bold.

Microsoft^® Internet Explorer^® 3.0 supports the font-weight attribute through the font, @font-face Rule, font-family, font-size, font-style, font-variant, font-weight attribute.

The following example demonstrates the effects of applying the different values possible for the CSS font-weight attribute.

<ul>
   <li style="font-weight:normal">Normal
   <li style="font-weight:bold">Bold
   <li style="font-weight:bolder">Bolder
   ...
</ul>

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The sample below uses inline event handlers to dynamically set an object’s fontWeight property in response to mouse events.

<p onmouseover="this.style.fontWeight='bolder'"
   onmouseout="this.style.fontWeight=''">
   ...
</p>

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font, @font-face Rule, font-family, font-size, font-style, font-variant