成功应用背景图像的步骤

确保使用link标签正确链接了HTML和CSS <link rel="stylesheet" ref="yourcssdocument.css"> 我不知道相对目录和子目录，所以我不能评论它 对我来说，最好的方法是在css中使用URL链接

#yourcssdoc .image {
   background-image: url("paste your link here with the quotations")
}

在CSS的.content选项卡中将其更改为position:absolute。否则，渲染的页面将不可滚动。

这个答案是为材料设计水平卡片布局动态高度和图像。

为了防止由于卡片的动态高度而导致图像失真，您可以使用带有模糊的背景占位符图像来调整高度的变化。

解释

The card is contained in a <div> with class wrapper, which is a flexbox. The card is made up of two elements, an image which is also a link, and content. The link <a>, class link, is positioned relative. The link consists of two sub-elements, a placeholder <div> class blur and an <img> class pic which is the clear image. Both are positioned absolute and have width: 100%, but class pic has a higher stack order, i.e., z-index: 2, which places it above the placeholder. The background image for the blurred placeholder is set via inline style in the HTML.

Code

.wrapper { display: flex; width: 100%; border: 1px solid rgba(0, 0, 0, 0.16); box-shadow: 0 1px 1px rgba(0, 0, 0, 0.16), 0 1px 1px rgba(0, 0, 0, 0.23); background-color: #fff; margin: 1rem auto; height: auto; } .wrapper:hover { box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23); } .link { display: block; width: 200px; height: auto; overflow: hidden; position: relative; border-right: 2px solid #ddd; } .blur { position: absolute; top: 0; left: 0; right: 0; bottom: 0; margin: auto; width: 100%; height: 100%; filter: blur(5px); -webkit-filter: blur(5px); -moz-filter: blur(5px); -o-filter: blur(5px); -ms-filter: blur(5px); } .pic { width: calc(100% - 20px); max-width: 100%; height: auto; margin: auto; position: absolute; top: 0; left: 0; right: 0; bottom: 0; z-index: 2; } .pic:hover { transition: all 0.2s ease-out; transform: scale(1.1); text-decoration: none; border: none; } .content { display: flex; flex-direction: column; width: 100%; max-width: 100%; padding: 20px; overflow-x: hidden; } .text { margin: 0; } <div class="wrapper"> <a href="#" class="link"> <div class="blur" style="background: url('https://i.imgur.com/5SZI6qZ.jpeg') 50% 50% / cover;"></div> <img src="https://i.imgur.com/5SZI6qZ.jpeg" alt="Title" class="pic" /> </a> <div class="content"> <p class="text">Agendum dicendo memores du gi ad. Perciperem occasionem ei ac im ac designabam. Ista rom sibi vul apud tam. Notaverim to extendere expendere concilium ab. Aliae cogor tales fas modus parum sap nullo. Voluntate ingressus infirmari ex mentemque ac manifeste eo. Ac gnum ei utor sive se. Nec curant contra seriem amisit res gaudet adsunt. </p> </div> </div>

你可以在你想要应用过滤器的图像上创建一个div，并使用backdrop-filter到它的CSS类。 看看这个链接

不使用伪类from

身体{ 背景:# cecece; font-family: "Scope One"， serif; 字体大小:12 px; 颜色:黑色; 保证金:0汽车; 高度:100%; 宽度:100%; 背景图片: 线性梯度(到底部，rgba(0,0,0,0.8)， rgba(0,0,0, 0.81))， url (https://i.imgur.com/2rRMQh7.jpg); -webkit-background-size:封面; -moz-background-size:封面; -o-background-size:封面; background-size:封面; ｝ 身体身体< > < / >

看看这支笔。

您必须使用两个不同的容器，一个用于背景图像，另一个用于内容。

在本例中，我创建了两个容器，.background-image和.content。

它们都被放置在位置:固定和左:0;右:0;。显示它们的差异来自为元素设置的不同的z-index值。

.background-image { position: fixed; left: 0; right: 0; z-index: 1; display: block; background-image: url('https://i.imgur.com/lL6tQfy.png'); width: 1200px; height: 800px; -webkit-filter: blur(5px); -moz-filter: blur(5px); -o-filter: blur(5px); -ms-filter: blur(5px); filter: blur(5px); } .content { position: fixed; left: 0; right: 0; z-index: 9999; margin-left: 20px; margin-right: 20px; } <div class="background-image"></div> <div class="content"> <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis aliquam erat in ante malesuada, facilisis semper nulla semper. Phasellus sapien neque, faucibus in malesuada quis, lacinia et libero. Sed sed turpis tellus. Etiam ac aliquam tortor, eleifend rhoncus metus. Ut turpis massa, sollicitudin sit amet molestie a, posuere sit amet nisl. Mauris tincidunt cursus posuere. Nam commodo libero quis lacus sodales, nec feugiat ante posuere. Donec pulvinar auctor commodo. Donec egestas diam ut mi adipiscing, quis lacinia mauris condimentum. Quisque quis odio venenatis, venenatis nisi a, vehicula ipsum. Etiam at nisl eu felis vulputate porta.</p> <p>Fusce ut placerat eros. Aliquam consequat in augue sed convallis. Donec orci urna, tincidunt vel dui at, elementum semper dolor. Donec tincidunt risus sed magna dictum, quis luctus metus volutpat. Donec accumsan et nunc vulputate accumsan. Vestibulum tempor, erat in mattis fringilla, elit urna ornare nunc, vel pretium elit sem quis orci. Vivamus condimentum dictum tempor. Nam at est ante. Sed lobortis et lorem in sagittis. In suscipit in est et vehicula.</p> </div>

为Lorem Ipsum的文本道歉。

更新

感谢Matthew Wilcoxson在https://codepen.io/akademy/pen/FlkzB之前使用.content::提供了更好的实现