How do you set the Arial font in HTML?

Setting the Arial font in HTML is relatively straightforward. In HTML, you can specify the font family of a text element using the CSS 'font-family' property. To use Arial as the font family, simply add the following CSS rule to your HTML code:

body {
 font-family: Arial, sans-serif;
}

This will set the font family of the body element (and all of its children) to Arial. The 'sans-serif' fallback specifies that if Arial is not available, the browser should use another sans-serif font instead.

If you want to apply the Arial font to a specific element, you can use the same CSS 'font-family' property:

This text is in Arial font.

Using web fonts is also an option, which allows you to use any font on your website by including a link to the font file in your HTML code.