To place an element in the grid area named “intro”, apply the style:

To tile a background image in the horizontal direction only, use:

Provide the transformation to reduce the horizontal and vertical size of an object by 50%.

Two table cells have adjacent borders. One cell has a 5-pixel-wide double border and the other cell has a 6-pixel-wide solid border. If the table borders are collapsed, what type of border will the two cells share? 

Which of the following styles sets the size of the left margin to 30 pixels?

What causes container collapse?

CSS comments are entered as:

To explicitly define the columns within a grid, use the CSS property:

To set the height of the table header row to 25 pixels, use:

Which command runs the init() function after a 5-second delay?