CSS: Value Error : background-image is an incorrect operator ) (validation fails)

Question

为什么根据 https://validator.w3.org/nu/#textarea（选中 CSS 框），以下 CSS 无效，但浏览器会正确呈现代码？

.color {
    background-image: linear-gradient(to right, rgb(248, 27, 27) 7%, #ff5722 10% 15%, #43a047 50% 60%, #7e57c2 92%, indigo);
}

值错误：背景图像运算符不正确

.color {
  background-image: linear-gradient(to right, rgb(248, 27, 27) 7%, #ff5722 10% 15%, #43a047 50% 60%, #7e57c2 92%, indigo);
  background-clip: content-box;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

p {
  background-image: linear-gradient(to left, violet, indigo, blue, green, yellow, orange, red);
}

<p class="color">testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing</p>

<p>testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content testing content</p>

Answer 1

当您使用多位置色标时，验证器似乎失败了https://developer.mozilla.org/en-US/docs/Web/CSS/linear-gradient()#gradient_with_multi-position_color_stops

如果您删除 #ff5722 10% 15% 之类的第二个位置（尝试 #ff5722 15% 之类的东西），它不会显示错误。

我认为这是验证器的问题，而不是您的代码的问题，它是有效的 CSS，甚至直接从 MDN 复制的代码也会失败。

如果您真的想消除该验证错误，您可以将色标一分为二，而不是像 #ff5722 10%, #ff5722 15%

这样使用多色标

Answer 2

它与双色停止有关#ff5722 10% 15%。验证器似乎没有使用这种新语法。您可以更新代码并使用：

.color {
     background-image: linear-gradient(to right, rgb(248, 27, 27) 7%, #ff5722 10%, #ff5722 15%, #43a047 50%, #43a047 60%, #7e57c2 92%, indigo);
     background-clip: content-box;
     -webkit-background-clip: text; 
     -webkit-text-fill-color: transparent;
   } 
p {
   background-image: linear-gradient(to left, violet, indigo, blue, green, yellow, orange, red); 
   }

CSS: Value Error : background-image is an incorrect operator ) (validation fails)

CSS: Value Error : background-image is an incorrect operator ) (validation fails)

css

linear-gradients