css - 使用 CSS 将子元素的背景颜色与父元素的背景图像混合

Question

我想将元素的背景颜色与父元素的背景图像混合。将 css 属性“background-blend-mode”设置为“multiply”后，它仅在颜色和图像设置在同一元素上时才有效。但是我想存档不同的颜色在同一个背景图像上混合 - 所以我必须将背景图像与 children 的颜色混合。有办法到达那里吗？

.bg {
  background-image: url(data:image/png;base64,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);
}

.mixit-green {
  background-color: #ddffdd;
  background-blend-mode: multiply;
  padding: 50px;
}

.mixit-blue {
  background-color: #ddddff;
  background-blend-mode: multiply;
  padding: 50px;
}

<div class="bg">
  <div class="mixit-green"></div>
  <div class="mixit-blue"></div>
</div>

Answer 1

它是 mix-blend-mode 而不是 background-blend-mode¹

.bg {
  background-image: url(data:image/png;base64,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);
}

.mixit-green {
  background-color: #ddffdd;
  mix-blend-mode: multiply;
  padding: 50px;
}

.mixit-blue {
  background-color: #ddddff;
  mix-blend-mode: multiply;
  padding: 50px;
}

<div class="bg">
  <div class="mixit-green"></div>
  <div class="mixit-blue"></div>
</div>

background-blend-mode 在有多个背景时使用。所以你可以像下面这样写:

.bg {
  padding:100px;
  background-image:
    linear-gradient(#ddffdd 50%,#ddddff 0),
  url(data:image/png;base64,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);
  background-blend-mode: multiply;
}

<div class="bg">
</div>

---

¹Defines the blending mode of each background layer.

Each background layer must blend with the element’s background layer that is below it and the element’s background color. Background layers must not blend with the content that is behind the element, instead they must act as if they are rendered into an isolated group. ^ref