如何仅在一侧创建插入框阴影？

Question

是否有可能只在 div 的一侧有插入框阴影？请注意，我在这里谈论的是 插入 框阴影，而不是正常的外框阴影。

例如，在下面的 JSFiddle 中，您会看到嵌入阴影以不同程度出现在所有 4 个面上。

我如何让它只显示在顶部？或者最多只在顶部和底部？

JSFiddle：http: //jsfiddle.net/ahmadka/KFrun/

 .box {
  -webkit-box-shadow: inset 0px 5px 10px 1px #000000;
  box-shadow: inset 0px 5px 10px 1px #000000;
}

.text {
  padding: 20px;
}

 <div class="box">
  <div class="text">
    Lorem ipsum ....
  </div>
</div>

原文由 Ahmad 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

这就是您要找的。它有您想要的带有阴影的每一面的示例。

 .top-box
{
    box-shadow: inset 0 7px 9px -7px rgba(0,0,0,0.4);
}
.left-box
{
    box-shadow: inset 7px 0 9px -7px rgba(0,0,0,0.4);
}
.right-box
{
    box-shadow: inset -7px 0 9px -7px rgba(0,0,0,0.4);
}
.bottom-box
{
    box-shadow: inset 0 -7px 9px -7px rgba(0,0,0,0.4);
}

有关更多示例，请参见代码段：

 body {
    background-color:#0074D9;
}
div {
    background-color:#ffffff;
    padding:20px;
    margin-top:10px;
}
.top-box {
    box-shadow: inset 0 7px 9px -7px rgba(0,0,0,0.7);
}
.left-box {
    box-shadow: inset 7px 0 9px -7px rgba(0,0,0,0.7);
}
.right-box {
    box-shadow: inset -7px 0 9px -7px rgba(0,0,0,0.7);
}
.bottom-box {
    box-shadow: inset 0 -7px 9px -7px rgba(0,0,0,0.7);
}
.top-gradient-box {
    background: linear-gradient(to bottom, #999 0, #ffffff 7px, #ffffff 100%);
}
.left-gradient-box {
    background: linear-gradient(to right, #999 0, #ffffff 7px, #ffffff 100%);
}
.right-gradient-box {
    background: linear-gradient(to left, #999 0, #ffffff 7px, #ffffff 100%);
}
.bottom-gradient-box {
    background: linear-gradient(to top, #999 0, #ffffff 7px, #ffffff 100%);
}

 <div class="top-box">
        This area has a top shadow using box-shadow
</div>

<div class="left-box">
        This area has a left shadow using box-shadow
</div>

<div class="right-box">
        This area has a right shadow using box-shadow
</div>

<div class="bottom-box">
        This area has a bottom shadow using box-shadow
</div>

<div class="top-gradient-box">
        This area has a top shadow using gradients
</div>
<div class="left-gradient-box">
        This area has a left shadow using gradients
</div>
<div class="right-gradient-box">
        This area has a right shadow using gradients
</div>
<div class="bottom-gradient-box">
        This area has a bottom shadow using gradients
</div>

原文由 Gordon Tucker 发布，翻译遵循 CC BY-SA 4.0 许可协议