在css和HTML5中替换<font color：=“”red =“”> text </font>的最佳方法是什么

Question

我有以下文本示例，我正在尝试传递w3C验证器，如何在html5和CSS中替换以下过时的<font>？我讨厌使用<p>或<h1,2,3>任何其他更简单的选项？

Tell us <font color="red"> why </font> you bought the product, and <font color="red"> when </font> you bought it.

Answer 1

使用span：

Tell us <span style="color: red;"> why </span> 
you bought the product, and <span style="color: red;"> when </span> you bought it.

Answer 2

一种方法：

<style>
    em.highlight: {
        color: red;
        font-style: normal;
    }
</style>

...

Tell us <em class="highlight"> why </em> you bought the product, and <em class="highlight"> when </em> you bought it.

我使用<em>，因为您正在尝试 em 对某些单词进行分析。