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Deprecated HTML Tags

Deprecated HTML tags such as font, center and marquee still render, but they belong in CSS. Here is how to spot them and swap them out.

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Free to use 1 min read Updated Sep 2026

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How to Fix

The short version, the same steps you see when you click How to Fix in your report.

In order to pass this test you must identify into your code all deprecated HTML tags listed above and replace them with proper tags or CSS rules. Some examples are given below:

  • for < applet > tag, the equivalent tag is < object >
  • for < center > tag, the alternative CSS property is text-align
  • for < font > tag, the alternative CSS properties are font-family and font-size
  • for < s >, < strike > and < u > tags, the alternative CSS property is text-decoration

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