stylesheet.css

body{
  background-color: slategrey;
}

ul {
  background-color:white;
  text-decoration-color: black;
}

div {
   margin: auto;
   background-color:white;
   border: 3px solid black;
   padding: 10px;
}

.pieChart {
   margin: auto;
   background-color:white;
   width: 50%;
   border: 3px solid black;
   padding: 10px;
}

  table, th, td {
   border: 1px solid black;
}

p{
  text-align: center;
}