是否可以在IE8中使用box-shadow？

Question

为什么这个CSS在框架/环境/浏览器中的应用不一致？

我在Meteor中创建了一个原型，其中CSS可以很好地创建阴影效果，并在各种图像悬停时添加边框;特别是在Meteor原型中（它是一个Sharepoint应用程序，但使用Meteor测试这样的功能要快得多）我有这个CSS：

#imgPostTravelTop:hover, #imgPostTravelTopRight:hover, #imgPostTravelCenter:hover, #imgPostTravelBottom:hover {
  z-index: 4;
    -moz-box-shadow: 0 0 7px #000;
    -webkit-box-shadow: 0 0 7px #000;
    box-shadow: 0 0 7px #000;

  border: 1px solid gold;
}

它工作正常 - 在鼠标中心/悬停在图像中，它会生成一个金色的五点钟形状。

然而，在Sharepoint代码中几乎完全相同：

.finaff-form-help-post-travel-centerimage:hover, 
.finaff-form-help-post-travel-bottomimage:hover {
    z-index: 4;
    -moz-box-shadow: inset 0 0 7px #000;
    -webkit-box-shadow: inset 0 0 7px #000;
    box-shadow: inset 0 0 7px #000;

    border: 1px solid gold;
}

...仅适用于Chrome和Firefox（不适用于IE8）。

我试过这个，据说可以在IE8中运行：

#imgPostTravel:hover {
  zoom: 1;
  filter: progid:DXImageTransform.Microsoft.DropShadow(OffX=5, OffY=5, Color=#ff0000);
}

...但它不起作用（不向IE8添加盒子阴影）。

我能做些什么让IE8中的盒子阴影工作吗？

Answer 1

你可以尝试@thirtydot回答：

使用CSS3 PIE，在旧版本的IE中模拟some CSS3 properties。

它支持box-shadow（except for inset关键字）。

修改：

或者你可以尝试@Marcus Pope回答：

filter: 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=0,strength=5), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=45,strength=2), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=90,strength=5), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=135,strength=5), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=180,strength=10), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=225,strength=5), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=270,strength=5), 
  progid:DXImageTransform.Microsoft.Shadow(color=#aaaaaa,direction=315,strength=2); 

可能重复的 Box shadow in IE7 and IE8
CSS3 Box Shadow Effect for IE8?

Answer 2

您正在尝试在Internet Explorer 5.5到8中制作插入框阴影。

这是完全可能的。

这是一个带有说明的代码示例：

（仅在Internet Explorer 5.5-8中显示）：

#box {
/* Make sure to set it to min-width so you can push the outside "Microsoft Shadow" out of the screen to the left, right, bottom, and top, because the shadow adds pixels to the 100% width whether you set it to width:100% or not, but if you set it to 100% width, you won't be able to make the margin push the outside shadow out. */
  min-width: 100%;
  /* For some reason, the above rule is not the case for height. I'm not sure why for Internet Explorer. */
  height:100%;
  position: relative;
  /* I discoverd the shadow won't even appear unless there is a boder of the same div. That's no big deal, just push the boder out too, along with the bleeding outside Mirosoft Shadow". */
  border: solid 1px black;
  zoom: 1;
  filter: progid:DXImageTransform.Microsoft.Shadow(Color=#aaaaaa, Strength=33, Direction=0),
         progid:DXImageTransform.Microsoft.Shadow(Color=#aaaaaa, Strength=33, Direction=90),
         progid:DXImageTransform.Microsoft.Shadow(Color=#aaaaaa, Strength=33, Direction=180),
         progid:DXImageTransform.Microsoft.Shadow(Color=#aaaaaa, Strength=33, Direction=270);
/* For the child, (child id is called "box")... you can only push out the content to the bottom and right, because of the natural left to right, top to bottom HTML layout. */
  margin-bottom: -39px;
  margin-right:130px;
}
.box-parent-fix {
/* This appears to be a hack as far as I know, the bleeding Microsoft Shadow (not the inset part, the outside part is what I'm talking about) will only be pushed out if it has a parent with the follow CSS: */
    position: relative;
    min-width: 100%;
    height: 100%;
}
.box-parent {
/* For the child, (child id is called "box")... you can only push out the content to the bottom and right, because of the natural left to right, top to bottom HTML layout. */
    margin-top:-49px;
    margin-left:-45px;
    height:100%;
    min-width:100%;
    background-color: white;
    position: relative;
}
body {
    position: relative;
    height: 100%;
    min-width:100%;
/* This hides the pushed out bleeding non-inset Microsoft Shadow. Please excuse my ugly sentence, haha. */
    overflow-y: hidden;
    overflow-x: hidden;
}

<body>
    <div class="box-parent-fix">
        <div class="box-parent">
            <div id="box">
 
            </div>
        </div>
    </div>
</body>

这是它在Internet Explorer 6中工作的屏幕截图：

这是它在Internet Explorer 8中工作的屏幕截图：