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Absolute length in CSS3:




 Absolute lengths are specified when the Web page designer is aware of
the physical properties of the output device. These are specific and feed values


Absolute length

               Description

in
Specifies the size and inches where one inch =2.54 centimeter.
cm
Specifies the in centimeters.
mm
Specifies the size in millimeters
pt
Specifies the size in points, where 1 point = 1/72th of an inch
pc
Specifies the size in picas, where 1 pica = 12 points



Example.


ol  {
  Font-family: Times New Roman;
Font-size: 0.5cm;
}
td {
       Font-size=0.2in;
}
caption {
           Font-size=3mm; }
  
   Ø Percentages
      
        Percentage allows specifying the length of the content, which is          relative to      another value.
    H1{
    Font-size=120%;
   Line-hight:200%;
}

The CSS code specifies the styles for the H1 element. The font-size property is set to a value of 120%. This means that the size of the header will appear 20% greater than Its current size. The line-height property is set to the value 200%. This means that the height of the line will be double the value of the font-size property.

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