<mspace> - MathML 编辑

The MathML <mspace> element is used to display a blank space, whose size is set by its attributes.

Attributes

class, id, style: Provided for use with stylesheets.
depth: The desired depth (below the baseline) of the space (see length for values and units).
displaystyle: A Boolean value specifying whether more vertical space is used for displayed equations or, if set to false, a more compact layout is used to display formulas. The main effect is that larger versions of operators are displayed, when displaystyle is set to true. See also largeop and movablelimits on <mo>.
height: The desired height (above the baseline) of the space (see length for values and units).
linebreak: Indicates a line-break at the space. Possible values: auto (default value), newline, nobreak, goodbreak, badbreak.
Starting with MathML 3, it is preferred to use <mo> to control linebreaking.
mathbackground: The background color. You can use #rgb, #rrggbb and HTML color names.
width: The desired width of the space (see length for values and units).

Note that some common attributes like mathcolor, mathvariant or dir have no effect on <mspace>.

<math>

  <mspace depth="40px" height="20px" />

  <mspace width="100px" />

</math>

Specification	Status	Comment
MathML Core The definition of 'mspace' in that specification.	Draft	Draft specification
MathML 3.0 The definition of 'mspace' in that specification.	Recommendation	Current specification
MathML 2.0 The definition of 'mspace' in that specification.	Recommendation	Initial specification

BCD tables only load in the browser

Indentation attributes are not implemented yet (for Gecko see bug 534962).
Support for negative values for the width attribute has been implemented in Gecko 23.0 (Firefox 23.0 / Thunderbird 23.0 / SeaMonkey 2.20).