When specifying fonts in CSS, it’s important to provide fallback font families in case the preferred font is not available on the user’s system. This helps ensure that your text displays consistently for all users, regardless of the operating system or browser they are using. Here’s an example of how to use font fallbacks:
body {
font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
}In this example, “Open Sans” is the preferred font family, but if it’s not available, the browser will try to use “Helvetica Neue”. If that font is also not available, it will fall back to Helvetica, then Arial, and finally to a generic sans-serif font.
It’s a good idea to provide multiple fallbacks in case the preferred font and the first fallback are not available. However, it’s also important to keep in mind that using too many fallbacks can slow down the page load time, so it’s best to keep it to a minimum.
In addition to font families, you can also specify font weights and styles in your font declarations. For example:
h1 {
font-family: "Roboto", sans-serif;
font-weight: 700;
font-style: italic;
}In this example, “Roboto” is the preferred font family, and the font weight is set to 700 (bold), and the font style is set to italic. If the preferred font and fallbacks don’t have a bold or italic version, the browser will try to simulate the effect, but it may not look as good as a true bold or italic font.