How do you include external fonts and apply them?

To include external fonts in your web page, you can use the @font-face rule in your CSS file. The @font-face rule allows you to specify a font family name and the URL where the font file is located. Here's an example

In this example, we are using the Google Fonts API to include the Open Sans font. The src property specifies the URL of the font file.

Once you have included the font using @font-face, you can apply it to specific elements in your HTML using the font-family property. For example:

In this example, we are applying the Open Sans font to the body element using the font-family property. If the font is not available, the browser will fall back to a sans-serif font.

Note that some fonts may require additional properties to be set, such as font-weight or font-style, in order to be properly displayed. Be sure to check the documentation for the font you are using to ensure that you are using the correct properties.