Tips for adjusting row height based on screen size using CSS Viewport units vmin and vmax

Use CSS Viewport units vmin and vmax to realize the technique of adjusting row height according to the screen size

Nowadays, the penetration rate of mobile devices is getting higher and higher. In order to improve User experience, web design requires a good responsive layout. When doing responsive design, a problem often encountered is how to adjust the row height according to the screen size. Fortunately, the CSS Viewport units vmin and vmax can help us achieve this goal.

The vmin and vmax units respectively specify a set of length units calculated relative to the viewport width or height. vmin specifies a length value that is the smaller of the viewport width and height. vmax specifies a length value that refers to the larger of the viewport width and height.

Suppose we have a page that contains multiple lines of text. We want the text line height to automatically adapt when the viewport width or height changes. Below are the implementation steps and corresponding code examples.

First, we need to set a base value. When the width or height of the viewport is 100vmin, the row height is set to 1vmin. In this way, when the width or height of the viewport is less than or equal to 100vmin, we can ensure that the row height will not exceed the width or height of the viewport.

html, body {
height: 100%;
margin: 0;
padding: 0;
}

.container {
height: 100vh; / Set the container height to the viewport height/
}

.text {
font-size: 1.5rem;
line-height: 1vmin; / Set the line height to 1vmin /
}

Next, we can contain multiple lines of text in a container and set the height of the container to the viewport height, so that the text This will completely fill the container. At the same time, we also set the font size of the text to 1.5rem to ensure the readability of the text.

With the above code, we have Completed the operation of adjusting the row height according to the screen size. Under different viewport sizes, the line height of the text will be scaled accordingly according to the current viewport size.

It should be noted that since vmin and vmax are calculated relative to the viewport size, caution should be used when using these units to avoid excessively enlarging or shrinking elements. In addition, different browsers may have some differences in how they calculate the viewport size, so the actual use may be slightly different.

To summarize, using the CSS Viewport units vmin and vmax provides convenience in adjusting row heights according to the screen size. By dynamically adjusting row heights, we can achieve a more flexible and adaptable responsive design. This technique can improve the user experience on various mobile devices and allow our web pages to better adapt to different screen sizes.

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