6

我想要一个不重复的背景图像。当图像结束时，它应该柔和地淡化为黑色。

这是我的意思的一个例子，它只是错过了“软衰落”。图像突然结束并且有黑色，我想让这个过渡更平滑。那可能吗？

（图片随机取自google）

body {
    background:url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png) #000 no-repeat;
}

现场演示：http: //jsfiddle.net/sMc8a/

4

2 回答 2

4

您可以尝试使用此代码。http://jsfiddle.net/sMc8a/3/

HTML

<div class="example">
    Hello
</div>

CSS

body {
  background: black;
}
.example {
  width: 300px;
  height: 300px;
  background-image: -webkit-linear-gradient(top, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    -webkit-linear-gradient(left, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);

  background-image: -moz-linear-gradient(top, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    -moz-linear-gradient(left, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);

  background-image: -o-linear-gradient(top, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    -o-linear-gradient(left, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);

  background-image: linear-gradient(top, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    linear-gradient(left, 
      rgba(0,0,0,0.9) 0%, 
      rgba(0,0,0,0) 20%,
      rgba(0,0,0,0) 80%,
      rgba(0,0,0,0.9) 100%
    ),
    url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
}
于 2013-09-01T20:52:36.890 回答
4

这适用于所有主要浏览器，测试一下！

演示在这里。

.background {
background-image: -webkit-linear-gradient(rgba(0,0,0, 0) 0%,rgba(0,0,0, 1) 100%), url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
background-image:  -moz-linear-gradient(rgba(0,0,0, 0) 0%,rgba(0,0,0, 1) 100%), url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
background-image:  -o-linear-gradient(rgba(0,0,0, 0) 0%,rgba(0,0,0, 1) 100%), url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
background-image:  -ms-linear-gradient(rgba(0,0,0, 0) 0%,rgba(0,0,0, 1) 100%), url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
background-image:  linear-gradient(rgba(0,0,0, 0) 0%,rgba(0,0,0, 1) 100%), url(http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png);
}

我包括了 -ms- 前缀。但我真的认为没有必要。

正如我所说，这仅适用于主要浏览器..因此添加一个后备，例如：

background: url('http://www.stadtteilschule-oejendorf.de/Unterricht/files/stacks_image_2936.png');
于 2013-09-01T21:06:18.240 回答