2. Which of the following is a question you should ask yourself when
doing self-analysis of your design?
A. Is there enough contrast?
B. Is the message clear?
C. Is the type readable?
D. All of the above.

In which career field, would the computing technology industry association's comptia a+ certification be useful?

Well, this code would box the whole body of an html document. by using the relative value for position, you are telling it to position relative to its normal position, which the top left corner is at (0,0). by using left: 50px, you are telling the box to set the left margin  edge to 50px and by using top: 50px, you are telling it to set the top margin edge to 50px. by doing this shifting, the top left corner of the box, which is at (0,0) would be positioned at (50,50)

To expand his vocabulary & proof read