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How to use CSS Viewport units vh and vw to implement layout that adapts to different screen heights
With the popularity of mobile devices, many websites and applications need to adapt to different screen heights can be well presented. CSS provides a range of units, of which the vh (viewport height) and vw (viewport width) units are ideal for adapting layouts to different screen heights. This article details how to use these two units and provides specific code examples.
First, let’s understand how these two units work:
Next, we will use these two units to implement a layout that adapts to different screen heights.
div { height: 50vh; }
In this way, when the div element is placed on a screen of different heights, its height will be adjusted accordingly. Adjustment.
.container { display: flex; align-items: center; justify-content: center; height: 100vh; } .element { width: 50%; }
In this example, the container element is set to occupy the height of the entire viewport (100vh), and uses flexbox to vertically center its child elements. The width of the child element is set to 50% of the viewport width.
h1 { font-size: 5vw; }
Here, the font size of the h1 element will be automatically adjusted according to the viewport width. On smaller screens, the font size will be reduced, while on larger screens, the font size will be larger.
Summary:
Using CSS viewport units vh and vw, we can easily implement layouts that adapt to different screen heights. By setting element heights, font sizes, and using layout techniques like flexbox, we can ensure that our websites and apps render well on different devices. The features and flexibility of these units make them powerful tools for responsive design.
I hope this article can help you understand how to use CSS viewport units vh and vw to implement layouts that adapt to different screen heights. By using these units, you can easily create unique and elegant web designs that work on a variety of devices.
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