,,, my exercises!!!

I learned many things about TLE subject and the one I learned is how to apply color background and image background in our exer6 and 7 in our exercise.
And for these exercises, I have encountered problems like typing code the color I like most but mostly I changed and changed.
But then I realized that "it is better to choosed a color that is good to the eye of people."
Moving on...I will choosed the better color so that I will not be confused..........