backface-visibility
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.
CSS 属性 backface-visibility
指定当元素背面朝向观察者时是否可见。
尝试一下
元素的背面是其正面的镜像。虽然在 2D 中不可见,但是当变换导致元素在 3D 空间中旋转时,背面可以变得可见。 (此属性对 2D 变换没有影响,它没有透视。)
语法
css
/* 关键字值 */
backface-visibility: visible;
backface-visibility: hidden;
/* 全局值 */
backface-visibility: inherit;
backface-visibility: initial;
backface-visibility: unset;
backface-visibility
属性可以指定为下面列出的值
值
visible
-
背面朝向用户时可见。
-
背面朝向用户时不可见。
形式定义
形式语法
backface-visibility =
visible |
hidden
示例
具有透明和不透明面的立方体
这个例子展示了一个透明面的立方体和一个不透明面的立方体。
HTML
html
<table>
<tr>
<th><code>backface-visibility: visible;</code></th>
<th><code>backface-visibility: hidden;</code></th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube showbf">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
<p>
由于所有的面都是部分透明的,所以背面(2、4、5)可以透过前面(1、3、6)看到。
</p>
</td>
<td>
<div class="container">
<div class="cube hidebf">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
<p>后面的三个面(2、4、5)被隐藏了。</p>
</td>
</tr>
</table>
CSS
css
/* Classes that will show or hide the
three back faces of the "cube" */
.showbf div {
backface-visibility: visible;
}
.hidebf div {
backface-visibility: hidden;
}
/* Define the container div, the cube div, and a generic face */
.container {
width: 150px;
height: 150px;
margin: 75px 0 0 75px;
border: none;
}
.cube {
width: 100%;
height: 100%;
perspective: 550px;
perspective-origin: 150% 150%;
transform-style: preserve-3d;
}
.face {
display: block;
position: absolute;
width: 100px;
height: 100px;
border: none;
line-height: 100px;
font-family: sans-serif;
font-size: 60px;
color: white;
text-align: center;
}
/* Define each face based on direction */
.front {
background: rgba(0, 0, 0, 0.3);
transform: translateZ(50px);
}
.back {
background: rgba(0, 255, 0, 1);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(196, 0, 0, 0.7);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(0, 0, 196, 0.7);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(196, 196, 0, 0.7);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(196, 0, 196, 0.7);
transform: rotateX(-90deg) translateZ(50px);
}
/* Make the table a little nicer */
th,
p,
td {
background-color: #eeeeee;
margin: 0px;
padding: 6px;
font-family: sans-serif;
text-align: left;
}
结果
规范
Specification |
---|
CSS Transforms Module Level 2 # backface-visibility-property |
浏览器兼容性
BCD tables only load in the browser