The Reliability of Using CSS Pixel Font Sizes

Imagine I need to display two capital 'T's, each exactly one inch tall. One 'T' appears on a Macbook Pro with Retina Display (220 DPI, CSS pixel ratio 2), and the other on an iPhone 4S (326 DPI, CSS pixel ratio 2). To achieve this, I set the font size on the Macbook Pro to 110px (220 / 2) and on the iPhone 4S to 163px (326 / 2). Despite these adjustments, the two 'T's remain different sizes. Why is this happening? How can I ensure they are physically identical in size?

Edit: Yes, I am using media queries. I didn't want to delve into the technical details but alluded to it by referencing the CSS pixel ratio. Let's assume I have access to the DPI and CSS pixel ratio of the client monitor at all times.

Appreciate your input!

Answer №1

In order to achieve this, the key concept to focus on is utilizing media queries. It's important to specify that media queries are being used for this purpose. By incorporating media queries into your code, you can effectively target both iPhone and iOS devices to achieve the desired outcomes:

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