How to make font bold in css

In web design, bold font is a common text effect, which can make the text more prominent and eye-catching. CSS (Cascading Style Sheets) is a style sheet language that can control the layout and style of web pages, including bolding text. This article will introduce how to use CSS to make fonts bold.

1. Use the font-weight attribute

The font-weight attribute of CSS can control the thickness of the font, and the value range is 100~900. Among them, 400 represents regular font and 700 represents bold font. So, to make a font bold, just set the font-weight property to 700. The following is a sample code:

p {
  font-weight: 700;
}

If you want to change a specific element (such as h1, h2, h3, etc. titles), you can replace p with the corresponding element name.

2. Use the strong tag

In addition to using CSS attributes to control font boldness, you can also use HTML tags to achieve this. Among them, the strong tag indicates to emphasize the text and the text will be displayed in bold. The following is a sample code:

<p>这是普通文本，<strong>这是加粗文本</strong>，又回到了普通文本。</p>

It should be noted that the strong tag not only implements the function of bolding text, but also has semantic meaning. According to W3C specifications, the strong tag should be used to emphasize important content, not just to achieve a bold effect. Therefore, when using the strong tag, you need to consider the text content and semantics.

3. Use the b tag

In addition to the strong tag, you can also use the b tag to make text bold. Similar to the strong tag, the b tag is also an HTML tag that emphasizes text and will display the text in bold. The following is sample code:

<p>这是普通文本，<b>这是加粗文本</b>，又回到了普通文本。</p>

It should be noted that the semantics of the b tag are broader, not just to emphasize important content. Therefore, when choosing to use the b tag, you need to consider the text content and semantics to avoid misleading readers.

Summary

Bold font is one of the commonly used text effects in web design, which can be achieved using CSS attributes, strong tags or b tags. When using it, consider the text content and semantics, and choose an appropriate way to bold. In addition, you can also batch control font thickness through style sheets or CSS frameworks to improve development efficiency.

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