Next, let's examine what happens when you apply a style to an element that contains other elements. The body element in the HTML file contains all the elements that are displayed. Clear the existing code from the style sheet, and set the color of the body element to green. Write the code for the style change and record what you observe.

Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.