渐变混合多个图像

Question

如何使用 CSS 使多个图像仅在特定区域相互渐变，如下图所示？

我试过的：

 .container { position: relative; display: flex; height: 200px; }.container:before { content: ''; position: absolute; width: 80px; top: 0; bottom: 0; right: 50%; margin-right: -40px; background: url(https://www.w3schools.com/w3css/img_fjords.jpg); filter: blur(5px); -webkit-filter: blur(5px); }.container > div { flex: 1; background-size: 100% 100%; }

 <div class="container"> <div style="backgroud-image:url(https://www.w3schools.com/w3css/img_fjords.jpg)"></div> <div style="background-image:url(https://www.w3schools.com/w3css/img_fjords.jpg)"></div> </div>

但是，对于背景图像没有褪色/过渡，如下图所示：

更新

我的问题没有得到任何可靠的答案，但这段代码似乎是迄今为止我能得到的最接近的答案。

PEN BY Peter Ramsing的修改

<div class="hero-image">
  <img src="http://static.peter.coffee/codepen-assets/keyboard-background.jpg" />
</div>
<div class="hero-before">
  <img src="http://static.peter.coffee/codepen-assets/keyboard-background.jpg" />
</div>

<style>
img {
  /*  To contain the image to the confines of the div  */
  max-width: 100%;
}

.hero-image {
  max-width: 100%; 
  width: 800px;
  margin: auto;
 }
.hero-before {
  max-width: 100%; 
  width: 800px;
  margin: auto;
}

.hero-image::after {
  display: block;
  position: relative;
  background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0, #fff 100%);
  margin-top: -50px;
  height: 40px;
  width: 100%;
  content: '';
}
.hero-before::after {
  display: block;
  position: relative;
  background-image: linear-gradient(to bottom, #fff 0%, rgba(255, 255, 255, 0) 100%);
  margin-top: -345px;
  height: 50px;
  width: 100%;
  content: '';
}
</style>

Answer 1

您可以使用一些放置在两个图像之间的伪元素并在其上应用线性渐变。 通过使用相同的颜色，您将创建此效果。 您可能会注意到该解决方案将通过使用背景颜色和背景图像来工作，您只需要尊重背景中使用的颜色并将它们应用于伪元素。

这是一个示例，您可以根据需要调整伪元素的宽度：

 .container { position: relative; display: flex; min-height: 100px; margin-bottom:20px; } .container:before { content: ''; position: absolute; width: 80px; top: 0; bottom: 0; right: 50%; margin-right: -40px; background: linear-gradient(to right, #c3986b, #0a4b67); } .container>div { flex: 1; background-size:100% 100%; }

 <div class="container"> <div style="background:#c3986b;"></div> <div style="background:#0a4b67;"></div> </div> <div class="container"> <div style="background-image:url(https://dummyimage.com/150x100/c3986b/14151a)"></div> <div style="background-image:url(https://dummyimage.com/150x100/0a4b67/14151a)"></div> </div>

这是另一个可以与任何类型的图像一起使用的蒙版的想法

 .container { display: flex; min-height: 300px; margin-bottom:20px; } .container>div { flex: 1; background-size:0 0; position:relative; z-index:-1; } .container>div::before { content:""; position:absolute; background-image:inherit; background-size:cover; background-position:center; z-index:-1; top:0; bottom:0; } .container>div:first-child::before { left:0; right:-50px; -webkit-mask:linear-gradient(to left,transparent ,#fff 50px); mask:linear-gradient(to left,transparent ,#fff 50px); } .container>div:last-child::before { right:0; left:-50px; -webkit-mask:linear-gradient(to right,transparent ,#fff 50px); mask:linear-gradient(to right,transparent ,#fff 50px); }

 <div class="container"> <div style="background-image:url(https://picsum.photos/id/1074/800/800.jpg)"></div> <div style="background-image:url(https://picsum.photos/id/1060/800/800.jpg)"></div> </div> <div class="container"> <div style="background-image:url(https://picsum.photos/id/1070/800/800.jpg)"></div> <div style="background-image:url(https://picsum.photos/id/1062/800/800.jpg)"></div> </div>

Answer 2

你可以结合background: linear-gradient()和Flexbox来实现这样的效果：

 div { display: flex; /* displays flex-items (children) inline */ justify-content: space-around; /* horizontal alignment / icons are evenly distributed with equal space around them, ie all have equal space on both sides, that's why there are two units of space between them / you can also experiment with other values such as: "space-between", "space-evenly", "center" etc. */ align-items: center; /* vertically centered */ height: 100px; background: linear-gradient(to right, #c3986b 45%, #0a4b67 55%); /* adjust the % to your needs, the sum of both needs to evaluate to 100% */ } img {border-radius: 50%}

 <div> <img src="http://lorempixel.com/50/50/" alt="icon1"> <img src="http://lorempixel.com/50/50/" alt="icon2"> </div>

在给定的示例中，我将linear-gradient()设为parent 宽度的10% 。 该数字是通过减去% 、 55% - 45%的两个值来计算的。

为了增加它的宽度，如果需要，只需增加较大的数字并减少较低的数字，最好以相同的%数量，例如40% / 60% ，使其水平居中。 要减少它的宽度，只需做相反的事情。

Answer 3

很好的例子，但是如何将其更改为水平底部和顶部而不是垂直

 .container { display: flex; min-height: 300px; margin-bottom:20px; }.container>div { flex: 1; background-size:0 0; position:relative; z-index:-1; }.container>div::before { content:""; position:absolute; background-image:inherit; background-size:cover; background-position:center; z-index:-1; top:0; bottom:0; }.container>div:first-child::before { left:0; right:-50px; -webkit-mask:linear-gradient(to left,transparent,#fff 50px); mask:linear-gradient(to left,transparent,#fff 50px); }.container>div:last-child::before { right:0; left:-50px; -webkit-mask:linear-gradient(to right,transparent,#fff 50px); mask:linear-gradient(to right,transparent,#fff 50px); }

 <div class="container"> <div style="background-image:url(https://picsum.photos/id/1074/800/800.jpg)"></div> <div style="background-image:url(https://picsum.photos/id/1060/800/800.jpg)"></div> </div> <div class="container"> <div style="background-image:url(https://picsum.photos/id/1070/800/800.jpg)"></div> <div style="background-image:url(https://picsum.photos/id/1062/800/800.jpg)"></div> </div>