When using the background-color property with rgba(255, 0, 255, 0.5) what does the "a" refer to?

When using "position: absolute;" the reference point is the browser window UNLESS one of the parent elements contain one of the following...

Which property is used to set whether table borders are collapsed into a single border or detached as in standard HTML?

What is the syntax for a customized cursor?

Which properties specifying whether to write the text from left to right or from right to left?

Given .class { padding: 20px 10px; }, in what order do padding values apply?

What is the initial value of the hyphens property?

What is the initial value of the opacity property?

Read the following: @page rotated {size: landscape} TABLE {page: rotated; page-break-before: right} What will this code do?

Suppose that a tag has 10 tags. In this case which statement is correct given the following? td:nth-child(3n+0){ background-color: orange; }

What will be the output of the following rule? em { color: rgba(0,0,255,1) }