Baseline Widely available
The <percentage>
CSS data type represents a percentage value. It is often used to define a size as relative to an element's parent object. Numerous properties can use percentages, such as width
, height
, margin
, padding
, and font-size
.
Note: Only calculated values can be inherited. Thus, even if a percentage value is used on the parent property, a real value (such as a width in pixels for a <length>
value) will be accessible on the inherited property, not the percentage value.
The <percentage>
data type consists of a <number>
followed by the percentage sign (%
). Optionally, it may be preceded by a single +
or -
sign, although negative values are not valid for all properties. As with all CSS dimensions, there is no space between the symbol and the number.
When animated, values of the <percentage>
data type are interpolated as real, floating-point numbers. The speed of the interpolation is determined by the easing function associated with the animation.
<div style="background-color:navy;">
<div style="width:50%; margin-left:20%; background-color:chartreuse;">
Width: 50%, Left margin: 20%
</div>
<div style="width:30%; margin-left:60%; background-color:pink;">
Width: 30%, Left margin: 60%
</div>
</div>
The above HTML will output:
Font-size<div style="font-size:18px;">
<p>Full-size text (18px)</p>
<p><span style="font-size:50%;">50% (9px)</span></p>
<p><span style="font-size:200%;">200% (36px)</span></p>
</div>
The above HTML will output:
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.3