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The MathML <mphantom> element is rendered invisibly, but dimensions (such as height, width, and baseline position) are still kept.


class, id, style
Provided for use with stylesheets.
The background color. You can use #rgb, #rrggbb and HTML color names.


Sample rendering: x+  z

Rendering in your browser: x + y + z


  <mi> x </mi>
  <mo> + </mo> 
    <mi> y </mi>
    <mo> + </mo>
  <mi> z </mi>



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

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support 1.0 (1.7 or earlier) No support No support 5.1
mathbackground No support 4.0 (2.0) No support No support 5.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support 1.0 (1.0) No support No support No support
mathbackground No support No support 4.0 (2.0) No support No support No support

See also


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