CSS grid and flexbox are now becoming a more popular way to create page layouts. However, floats are still commonly used, especially when working with an older code base, or if you need to support older browser version. What are two valid techniques used to clear floats?

When adding transparency styles, what is the difference between using the opacity property versus the background property with an rgba() value?

What is true of block and inline elements? (Alternative: Which statement about block and inline elements is true?)

What is the line-height property primarily used for?

Three of these choices are true about class selectors. Which is NOT true?

There are many properties that can be used to align elements and create page layouts such as float, position, flexbox and grid. Of these four properties, which one should be used to align a global navigation bar which stays fixed at the top of the page?

Which answer best describes the following css rule? a {text-decoration:none;}

The id selector uses the id attribute of the HTML element, and is defined with a...

In reality layers are often used in more dynamic ways:

Which of the following CSS declarations would change the border style?

Which of the following characters is used to end a css declaration block?