In CSS, setting the font to bold means setting the font style to bold; bold is the attribute value of "font-weight", which is used to set the thickness of the text. Setting the attribute value to bold means To define bold characters, the syntax is "element {font-weight: bold}".
The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.
bold is the attribute value of font-weight.
The font-weight property sets the thickness of the text.
This attribute is used to set the bold font used in the text of the display element. The numeric value 400 is equivalent to the keyword normal, and 700 is equivalent to bold. The font bold for each numeric value must be at least as thin as the next smallest number, and at least as thick as the next largest number.
normal Default value. Defines standard characters.
bold Defines bold characters.
bolder Defines bolder characters.
lighter Defines thinner characters.
Numerical values define characters from thick to thin. 400 is equivalent to normal, and 700 is equivalent to bold.
The example is as follows:
<html>
<head>
<style type="text/css">
p.normal {font-weight: normal}
p.thick {font-weight: bold}
p.thicker {font-weight: 900}
</style>
</head>
<body>
<p class="normal">This is a paragraph</p>
<p class="thick">This is a paragraph</p>
<p class="thicker">This is a paragraph</p>
</body>
</html>Output result:
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