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Correct!

题目：

Set the transparency/opacity of the <img> element to "0.4".

提示：Use the opacity property.

修改以下代码：

效果预览：

答案：

效果预览：

CSS 选择器

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CSS 使用

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CSS 背景

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CSS 文本

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CSS 字体

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CSS 链接

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CSS 列表

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CSS 表格

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CSS 框模型

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CSS 边框

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CSS 轮廓

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CSS 外边距

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CSS 内边距

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CSS 高度和宽度

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CSS 可见性

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CSS 定位

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CSS 对齐

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CSS 组合器

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CSS 伪类

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CSS 伪元素

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CSS 透明度

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CSS 属性选择器

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CSS3 圆角

Exercise 1 Exercise 2 再去学一下教程

CSS3 边框图像

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CSS3 多重背景

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CSS3 颜色

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CSS3 渐变

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CSS3 阴影效果

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 再去学一下教程

CSS3 文本效果

Exercise 1 Exercise 2 Exercise 3 再去学一下教程

CSS3 Web字体

Exercise 1 Exercise 2 再去学一下教程

CSS3 2D转换

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CSS3 3D转换

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CSS3 过渡

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CSS3 动画

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