How Can I Scale Font Size Proportionally to its Container Size in CSS?

Scaling Font Size with Container Size in CSS

CSS offers a method for proportionally adjusting font size based on the size of its container, despite the limitations of scaling fonts using percentages.

To achieve this, utilize the viewport width unit (vw):

#mydiv { font-size: 5vw; }

With this setup, the font within the container, denoted by #mydiv, will constantly scale as a percentage of the viewport's width.

Alternatively, employing SVG embedded in the HTML provides another solution. In this approach, the font-size attribute of the text element is interpreted as "user units" in relation to the viewport's dimensions. For instance, a font-size of 1 in a viewport defined as 0 0 100 100 represents one-hundredth of the SVG element's size.

It's important to note that calculations within CSS percentages are always relative to the inherited font size, not the container size. Therefore, CSS lacks a designated unit for scaling font size based on container width, like "bw" (box-width).

The above is the detailed content of How Can I Scale Font Size Proportionally to its Container Size in CSS?. For more information, please follow other related articles on the PHP Chinese website!