ClickHelp User Manual
Font Size Units
The tables below list supported and unsupported CSS units for printed formats. There are some specifics because of the differences between printed formats of documentation and online documentation as they render in a different way.
Supported Font Size Units for Absolute Lengths
The absolute length units are fixed and a length expressed in any of these will appear as exactly that size.
| Unit |
Description
|
|---|---|
| cm |
centimeters
|
|
mm
|
millimeters
|
|
in
|
inches (1in = 96px = 2.54cm)
|
|
px *
|
pixels (1px = 1/96th of 1in)
|
|
pt
|
points (1pt = 1/72 of 1in)
|
|
pc
|
picas (1pc = 12 pt)
|
Supported Font Size Units for Relative Lengths
Relative length units specify a length relative to another length property. Relative length units scale better between different rendering mediums.
| Unit | Description |
|---|---|
| em |
Relative to the font-size of the element (2em means 2 times the size of the current font)
|
| ex |
Relative to the x-height of the current font (rarely used)
|
| ch |
Relative to width of the "0" (zero)
|
| rem |
Relative to font-size of the root element
|
| vmin |
Relative to 1% of viewport's* smaller dimension
|
| vmax |
Relative to 1% of viewport's* larger dimension
|
| % |
Relative to the parent element
|
Unsupported Font Size Units
| Unit |
Description
|
|---|---|
| vh |
Relative to 1% of the height of the viewport
|
| vw |
Relative to 1% of the width of the viewport
|