Select an idea developing an application like web / mobile , it should be based on anovated ideas not just a simple application . After selecting idea do the following
1 , How ur project will be helpful and what problem this project addresses
2, write down the requirements
3, list the functional and non functional requirements
4 Which process model u will follow for this project and why

Answer shorter following distance, increased speed, erratic lane changes,the answer would be all the above;

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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)