HTML5 MathML

HTML5 MathML frame Attribute

The frame attribute on the <mtable> element controls whether a border is drawn around the entire table, and whether that border is solid or dashed.

Definition and usage

The frame attribute accepts three values: none (no border, the default), solid (a solid border) and dashed (a dashed border). It draws a frame around the outside of the whole table.

Which elements use it

<mtable> - draws a frame around the whole table.

Example

A framed 2x2 matrix

<math>
  <mtable frame="solid">
    <mtr>
      <mtd><mn>1</mn></mtd>
      <mtd><mn>0</mn></mtd>
    </mtr>
    <mtr>
      <mtd><mn>0</mn></mtd>
      <mtd><mn>1</mn></mtd>
    </mtr>
  </mtable>
</math>

The frame="solid" attribute draws a solid rectangle around the identity matrix.

⚠️

The frame attribute is not part of MathML Core, so support is inconsistent. Firefox honours it; Chromium browsers may ignore it. Consider CSS borders as an alternative.

HTML5 MathML frame Attribute

Definition and usage

Which elements use it

Example

Ready to use your HTML skills?