Maintain consistency throughout your site: If you decide to use the font tag , be sure to keep it consistent throughout your website to ensure a consistent visual experience.
Updated usage examples:
<span style="font-size: 20px;">Texto con tamaño de whatsapp canada fuente personalizado</span>
This example illustrates how you can modify the size of text using inline CSS within a <span> element . However, it is important to remember that this is not best practice and it is recommended that you use external stylesheets to style your HTML elements.
In short, although the font tag used to be a commonly used tool in the past, it is nowadays considered outdated compared to modern web design practices. It is crucial to understand its limitations and opt for more up-to-date and effective methods, such as using CSS to style your HTML elements.

Complete Guide to Adjusting Font Size in HTML: Master Font-Size with These Tips!
In web design, font size adjustment is a crucial aspect that directly influences the readability and aesthetics of a site. The CSS font-size element is essential for controlling the size of text on a web page. Mastering its use can make all the difference in user experience and the overall look and feel of the design.