[CSS] Conditionally Apply Styles Using Feature Queries @supports

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[CSS] Conditionally Apply Styles Using Feature Queries @supports

While browsers do a great job of ignoring styles they don’t understand, it can be useful to provide different sets of styles depending on a browser’s support for them. Learn how to use CSS feature queries without JavaScript.…

即将来到: CSS Feature Queries (CSS特性查询)

Feature Queries 是CSS3 Conditional Rules specification中的一部分,它支持“@supports”规则,“@supports”规则可以用来测试浏览器是否支持CSS属性和值对.CSS本身有降级机制,比如忽视不支持的属性或值,但当很重要的属性直接被忽视也是很严重的,这个时候你可以用Feature Queries 测试是否支持所有的CSS规则,还可以优化你的页面.Queries在各个浏览器中已经有很多稳定的实现了,比如Chrome,Firefox和 Op…

[CSS] Conditionally Assign Style to a Parent Element with Focus-Within Pseudo-class

Use the focus-within pseudo-class to conditionally assign styling to a parent element when its child receives focus. HTML: import "./styles.css"; document.getElementById("app").innerHTML = ` <ul id="red"> <li> <…

CSS#Flex-box, border-size, onresize() event, Media Queries

Flexbox Pseudo-classes box-sizing: border-box HTML DOM event resize() @media Queries: 根据一些css条件,触发一些css的变化.(无需javascript) Responsive CSS : 网格Gird就是模拟了Bootstrap,配合@media,可以激发不同的类. Knowledge: Flexbox Layout Module 个人感觉可以替代Bootstrap4的布局了.当然还是Bootstrap4…

[CSS] Easily Reset Styles With a Single CSS value

There are times where you need to reset a an element’s styles. Instead of overwriting it with even more style declarations, you can simply reset them. /* Styles go here */ body { color: #d200ff; } button { color: white; font-size: 14px; background: l…

Enable CSS active pseudo styles in Mobile Safari

http://alxgbsn.co.uk/2011/10/17/enable-css-active-pseudo-styles-in-mobile-safari/ document.addEventListener("touchstart", function() {},false); html { -webkit-tap-highlight-color: rgba(0,0,0,0); }…

Review CSS Selectors

Throughout this lesson, you learned how to select HTML elements with CSS and apply styles to them. Let's review what you learned: CSS can change the look of HTML elements. In order to do this, CSS must select HTML elements, then apply styles to them.…