This course has been updated! We now recommend you take the CSS In-Depth, v2 course.
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The "Transparency and color tips" Lesson is part of the full, CSS3 In-Depth course featured in this preview video. Here's what you'd learn in this lesson:
Reducing an object’s opacity will make both the object and its children transparent. It’s often better to use a background color with transparency so the children of the object aren’t affected. Using RGBA or HSLA is often best for shadows. The appearance property in CSS allows developers to change the look of an element. Currently, the appearance property requires vendor prefixes.