Can’t Change Font Weight Css

CSS Programming

Have you ever encountered the frustration of trying to change the font weight in your CSS, only to find that it just doesn’t seem to work? As a web developer, I’ve faced this issue many times, and I understand how maddening it can be. In this article, I will explore why you might be facing this problem and provide some troubleshooting tips to help you overcome it.

The Basics of Font Weight

Before we dive into the reasons why you might not be able to change the font weight in CSS, let’s first understand what font weight is. Font weight refers to the thickness or density of a font. We typically use numeric values or keywords to specify the font weight in CSS. Common font weight keywords include ‘normal’, ‘bold’, ‘lighter’, and ‘bolder’.

When you specify a font weight in your CSS, the browser tries to match it with an available font weight in the font family you have chosen. If an exact match is not available, the browser will try to find the closest match.

Possible Reasons for Font Weight Not Changing

If you find that your CSS code for changing the font weight is not having any effect, there could be a few possible reasons:

  1. Font family limitations: Different font families have different available font weights. If the font family you are using doesn’t have the specific font weight you are trying to apply, the browser will not be able to render it. In this case, you may need to choose a different font family or explore other options for achieving the desired visual effect.
  2. Font weight inheritance: Font weight can be inherited from parent elements in CSS. If a parent element has a specific font weight applied, it can override the font weight you try to set on a child element. To counter this, you can use the font-weight: inherit; property to explicitly inherit the font weight from the parent element.
  3. Specificity and cascading rules: CSS follows specific rules for determining which styles should be applied when there are conflicting styles. If you have conflicting styles related to font weight, be sure to check the specificity and cascading rules to ensure that your desired font weight is not being overwritten by another style rule.
  4. External factors: Sometimes, external factors such as browser extensions, ad blockers, or content security policies can interfere with font rendering and override your CSS settings. Consider disabling any extensions or policies temporarily to see if they are the cause of the issue.

Troubleshooting Tips

If you are still unable to change the font weight in your CSS after considering the possible reasons mentioned above, here are a few troubleshooting tips you can try:

  • Use a different font family: As mentioned earlier, some font families may not have the specific font weight you want. Experiment with different font families to see if the issue persists.
  • Inspect the element: Use your browser’s developer tools to inspect the element and check if any other styles or inherited font weights are affecting your CSS. You can also modify the styles directly in the inspector to test different font weight values.
  • Check for browser support: Although most modern browsers support changing font weight using CSS, it’s always a good idea to double-check the browser compatibility of the font weight property you are using. Visit the Can I use website to see the browser support for various CSS properties.


In conclusion, changing font weight in CSS can sometimes be a challenging task. However, by understanding the basics of font weight, considering possible reasons for font weight not changing, and employing troubleshooting tips, you can overcome this issue. Remember to test your CSS code in different browsers and devices to ensure consistent font weight rendering.