CSS背景图像加上4个角的渐变

Question

我想要实现的是这样的

目前我尝试的是 CSS3 多重背景，当我使用一个角时它起作用了

在这里查看：CSS code

但是当我添加更多“背景”时它不起作用

在此处查看示例：jsfiddle

code is too long to post it here, view it on jsfiddle

有什么建议可以改善这一点，或者有更好的方法吗？ 谢谢

更新：答案

这是我使用的背景（渐变）。 Link

这是我使用代码的方式：

HTML

<section class="window">
   <div class="win1con">

   </div>
</section>

CSS

    .window {
      width: 100%;
      height: 100%;
      position: absolute;
      overflow: hidden;
    }
    .win1con {
      width: 100%;
      height: 100%;
      position: absolute;
      overflow: hidden;
      top: 0%;
      /* IE9 SVG, needs conditional override of 'filter' to 'none' */
      background: url(data:image/svg+xml;base64,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);
      background: -moz-radial-gradient(center, ellipse cover,  rgba(0,0,0,0) 55%, rgba(0,0,0,0.05) 58%, rgba(0,0,0,0.8) 100%); /* FF3.6+ */
      background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(55%,rgba(0,0,0,0)), color-stop(58%,rgba(0,0,0,0.05)), color-stop(100%,rgba(0,0,0,0.8))); /* Chrome,Safari4+ */
      background: -webkit-radial-gradient(center, ellipse cover,  rgba(0,0,0,0) 55%,rgba(0,0,0,0.05) 58%,rgba(0,0,0,0.8) 100%); /* Chrome10+,Safari5.1+ */
      background: -o-radial-gradient(center, ellipse cover,  rgba(0,0,0,0) 55%,rgba(0,0,0,0.05) 58%,rgba(0,0,0,0.8) 100%); /* Opera 12+ */
      background: -ms-radial-gradient(center, ellipse cover,  rgba(0,0,0,0) 55%,rgba(0,0,0,0.05) 58%,rgba(0,0,0,0.8) 100%); /* IE10+ */
      background: radial-gradient(ellipse at center,  rgba(0,0,0,0) 55%,rgba(0,0,0,0.05) 58%,rgba(0,0,0,0.8) 100%); /* W3C */
      filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00000000', endColorstr='#cc000000',GradientType=1 ); /* IE6-8 fallback on horizontal gradient */
      top: 0%;
      background: url('../images/vntg.jpg');
    }

Answer 1

你可以使用 box-shadow：

background:url('http://i.imgur.com/7TX9BQU.jpg?1?9512');
box-shadow: inset 0px 0px 200px 10px #000;

完成这项工作的关键是“插入”值。 Tt 使阴影出现在元素的内部。

小提琴：http://jsfiddle.net/KhLsQ/5/

关于 box-shadow 的信息：http://www.css3.info/preview/box-shadow/