为什么这个背景源不起作用?

时间:2017-06-26 04:55:23

标签: css3

我正在搞乱背景原产地购买它似乎没有工作原因?从我的理解背景 - 起源决定了盒子模型的绘画区域,我认为这应该显示蓝色填充,但它不是,我确定我做错了什么。 https://jsfiddle.net/36trf972/18/

div{
  background-color: blue;
  width: 100px;
  height: 100px;
  border: 5px dashed red;
  padding: 10px;
  background-clip: border-box;
  background-origin: content-box;//not working-why?
   background-size: cover;
  background-position: center;
  background-image: url("panda.jpg");
  }

4 个答案:

答案 0 :(得分:2)

  

1)使用px代替center

     

2)我使用background-repeat:no-repeat;为您看到更好的结果。



div{
  background-color: blue;
  width: 100px;
  height: 100px;
  border: 5px dashed red;
  padding: 10px;
  background-clip: border-box;
  background-origin: content-box;//not working-why?
   background-size: cover;
  background-position:50px 50px;
  background-repeat:no-repeat;
  background-image: url("data:image/jpeg;base64,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");
}

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答案 1 :(得分:1)

您需要删除该属性:

background-size: cover;

封面告诉浏览器确保图像始终覆盖整个容器,即使它必须拉伸图像或从其中一个边缘切掉一点。

另外,添加:

background-repeat:no-repeat;

防止重复。

答案 2 :(得分:0)

使用background-origin时,了解它的作用(以及它不做什么)非常重要,以获得预期的结果。

background-origin指定背景图片的位置是相对于 填充框边框框还是内容框。它不会裁剪或隐藏图像的任何部分。 (这就是background-crop的用途。)

所以background-origin实际上就像预期的那样表现了你的榜样:

background-origin: content-box // position relative to content box
background-position: center    // position center of image at center of content

图像中心位于内容框中心。从那里它延伸到各方面。

恰好在您的示例中,内容框的中心与填充框或边框的中心完全相同,因为边框和边框的宽度相等。

答案 3 :(得分:0)

请勿将background-repeat:repeatbackground-origin:content-box一起使用。它将无法正常工作。

对于所有其他background-origin,例如border-boxpadding-box,repeat选项将非常正常。

如果您尝试用背景填充内容,则唯一的选择是使用cover中的 background-size。.

如果您只想给所有内容提供 div 之类的容器元素,则最好的解决方案是用html编写额外的代码您需要的内容,并在其中填充背景。.