HTML5 | MathML <mphantom> Tag

The MathML <mphantom> tag in HTML5 is used to rendered invisibly but the dimensional are still kept.
Syntax:

<mphantom> Child elements </mphantom>

Attributes: This tag accepts some attributes which are listed below:

class|id|style: This attribute is used to hold the styles of the child elements.
mathbackground: This attribute holds the value of the math expressions background color.

Below example will illustrates the concept of HTML 5 MathML <mphantom> tag:
Example:

html

<!DOCTYPE html>
<html>

<head>
    <title>HTML5 mphantom tag</title>
</head>

<body style="text-align:center;">
    
    <h1 style="color:green">GeeksforGeeks</h1>
    
    <h3>HTML5 MathML &lt;mphantom&gt; tag</h3>
    
    <math>
        <maction actiontype="toggle">
            <mfrac>
                <mn>25</mn>
                <mn>10</mn>
            </mfrac>
            <mfrac>
                <mrow>
                    <mphantom>
                        <mn>5</mn>
                        <mo>&sdot;</mo>
                        <mn>5</mn>
                    </mphantom>
                </mrow>
                <mrow>
                    <mphantom>
                        <mn>2</mn>
                        <mo>&sdot;</mo>
                        <mn>5</mn>
                    </mphantom>
                </mrow>
            </mfrac>
            <mfrac>
                <mn>2</mn>
                <mn>5</mn>
            </mfrac>
        </maction>
    </math>
    
    
<p>
        By clicking the number you can
        see 5*5 and 2*5 is invisible
    </p>

</body>

</html>

Output:

Supported Browsers: The browsers are supported by HTML5 MathML <mphantom> tag are listed below:

Firefox
Safari

HTML5 | MathML <mphantom> Tag

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