CSS3 ::选择在FF＆amp;中的表现不同铬

Question

我正在试验CSS3中的::selection伪元素。在Firefox中它工作并且看起来很棒。我的网站有深蓝色背景。

我将选择设置为在FF中看起来像这样。

但在chrome中，同样的测试看起来像这样。似乎chrome将选择解释为半透明，结果颜色很讨厌。

有没有人知道是否可以让Chrome的行为与Firefox相同。

此处参考是我的css：

p::-moz-selection { background:#FFFF7D; color:#032764; }
p::-webkit-selection { background:#FFFF7D; color:#032764; }
p::selection { background:#FFFF7D; color:#032764; }

由于

Answer 1

出于某种原因，Chrome强制它是半透明的。但是，您可以通过使用rgba设置background来解决此问题。我将alpha值设置为仅比0.01小1.实例：http://jsfiddle.net/tw16/m8End/

p::-moz-selection {
    background:rgba(255, 255, 125, 0.99);
    color:#032764;
}
p::-webkit-selection {
    background:rgba(255, 255, 125, 0.99);
    color:#032764;
}
p::selection {
    background:rgba(255, 255, 125, 0.99);
    color:#032764;
}

Answer 2

在Steven Lu has pointed out的评论中为tw16's answer，不透明度阈值为255/256。

换句话说，0.996可以使用，但0.997不会。

让我们看看它的实际效果：

::selection
{
  background: rgba(255, 127, 0, 0.996);
  color: white;
}

::-moz-selection
{
  background: #F80;
  color: white;
}

<p>The domestic cat is a small, usually furry, domesticated, and carnivorous mammal. They are often called a housecat when kept as an indoor pet, or simply a cat when there is no need to distinguish them from other felids and felines. Cats are often valued by humans for companionship.</p>
    <img src="http://placekitten.com/g/75/300">
    <img src="http://placekitten.com/g/300/300">
    <img src="http://placekitten.com/g/150/300">
<p>A Melvin, Michigan woman was brutally attacked by a stray cat and shocking footage of the mauling has already gained a million views on YouTube.</p>
<p>The woman, who identified herself to reporters only as Maxx, endured the horrific attack November 30 but only recently realized it had been caught on her home surveillance camera.</p>
<p>The attack left her face swollen and infected and the cat named Buddy dead as officials were forced to test it for rabies.</p>

正如您在Chrome中看到的那样，这会遮挡图像。要解决这个问题，我们需要将特定样式应用于图像选择，不透明度较低：

::selection
{
  background: rgba(255, 127, 0, 0.996);
  color: white;
}

::-moz-selection
{
  background: #F80;
  color: white;
}

img::selection
{
  background: rgba(255, 127, 0, 0.8);
  color: white;
}

<p>The domestic cat is a small, usually furry, domesticated, and carnivorous mammal. They are often called a housecat when kept as an indoor pet, or simply a cat when there is no need to distinguish them from other felids and felines. Cats are often valued by humans for companionship.</p>
    <img src="http://placekitten.com/g/75/300">
    <img src="http://placekitten.com/g/300/300">
    <img src="http://placekitten.com/g/150/300">
<p>A Melvin, Michigan woman was brutally attacked by a stray cat and shocking footage of the mauling has already gained a million views on YouTube.</p>
<p>The woman, who identified herself to reporters only as Maxx, endured the horrific attack November 30 but only recently realized it had been caught on her home surveillance camera.</p>
<p>The attack left her face swollen and infected and the cat named Buddy dead as officials were forced to test it for rabies.</p>

在Firefox中，似乎没有办法覆盖图像上的蓝色选择颜色。