What causes the size of text to change when I zoom in my browser?

As I work on my website, I am facing a challenge with maintaining consistent text size as the page scales.

For example:

p {
  width: 10%;
  height: 10%;
  background-color: rgb(0,0,0);
  top: 50%;
  left: 50%;
  position: fixed;
  color: rgb(255,255,255);
  font-size: 175%;
}
<!DOCType html>
<html>
  <head>
    <title>:(</title>
  </head>
  <body>
    <div><p>TEXT</p></div>
  </body>
</html>

This is just an illustration and not exactly how I have implemented it. Even though the div maintains its size when zooming in or out of the browser, the text does not stay within the box as expected.

Answer №2

My decision is to define all measurements in pixels and enable scroll overflow. This ensures that regardless of the viewer, they will experience the same page layout. It may require scrolling to view everything, but it maintains consistency. As browsers continue to update and incorporate new text features, this approach may become less feasible.

Answer №3

Here is a previous suggestion: Consider using em units instead of percentages.

To ensure that your design scales effectively, it's important to use relative measurements in your CSS. Em and percentage units can be helpful for this purpose.

If you want the text size to remain consistent regardless of browser zoom level, you can achieve this by utilizing viewport units:

https://css-tricks.com/examples/ViewportTypography/

p {
  font-size: 2vmin;
}

It should be noted that using vh, vw, and vmin formats may lead to compatibility issues and are not always recommended.

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