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CSS: Font weight

In the HTML course, the tag <b> had the same role as the font-weight property in CSS, namely, of course, to control the font weight. The property is more flexible than the standard styles of the <b> tag, as you can not only make it thicker, but also thinner.

There are two particularly common values for the font-weight property:

  1. bold — thicker font. The text will look the same way as if you use the <strong> or <b> tag.
  2. normal is the default value. This is useful if the entire text has a non-standard font-weight, but a section needs to have a standard weight
<p class="bold">Text with bold typeface</p>
.bold {
  font-weight: bold;

Text with bold typeface

But these are not all the values a property can take. In addition to the bold and normal descriptions, there are also numeric ones:

  • 100
  • 200
  • 300
  • 400 - corresponds to the value of normal
  • 500
  • 600
  • 700 - corresponds to the value of bold
  • 800
  • 900

Although there are many numerical values, here it all depends on the typefaces of the font, and more precisely on whether it has characters for each type of font weight. Most fonts support only normal and bold values and if specified otherwise, the browser will choose which weight to substitute. More often than not, all values above 500 will be interpreted as bold


Add a paragraph to the editor with the class set to weight and set the weight set to bold. Add styles to the <style> tag

The exercise doesn't pass checking. What to do? 😶

If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:

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In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

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  • If the font has only normal weight, the browser will automatically make the characters bold when you set it to bold. This may not look the way the font designers intended, so make sure that all the right variations of the font are installed

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