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    The <number> CSS data type represents a number, either integer or fractional. Its syntax extends the one of the <integer> data value. To represent a fractional value, add the fractional part — a '.' followed by one or several decimal digits — to any <integer> data value. Like for <integer> data type, there isn't any unit associated to a <number>, which is not a CSS dimension.


    Values of the <number> CSS data type can be interpolated in order to allow animations. In that case they are interpolated as real, floating-point, numbers. The speed of the interpolation is determined by the timing function associated with the animation.


    These are valid number values:

    12          A raw <integer> is also a <number>
    4.01        A positive non-integer <number>
    -456.8      Negative non-integer <number>
    0.0         Zero
    +0.0        Zero, with a leading +
    -0.0        Zero, with a leading - (Though strange, this is an allowed value)
    .60         Digits are optional before the dot

    These are invalid number values:

    12.         The dot should be followed by a number
    +---12.2    Only one leading +/- is allowed
    12.1.1      Only one dot is allowed
    10e3        The e notation is not allowed


    Specification Status Comment
    CSS Values and Units Module Level 3 Candidate Recommendation No significant change from CSS Level 2 (Revision 1)
    CSS Level 2 (Revision 1) Recommendation Explicitly defined
    CSS Level 1 Recommendation Implicitly defined

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    basic 1.0 1.0 (1.0) <=5.0 yes 1.0 (85)
    Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support yes yes yes yes yes

    See also

    Document Tags and Contributors

    Contributors to this page: Sheppy
    Last updated by: Sheppy,
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