table, th, td {

 border: 1px solid black; 
 border-collapse: collapse;
 padding: 10px;
}



tr:nth-child(odd) {background-color: #fffffe;}
tr:nth-child(even) {background-color: #d9dff3;}

section {
  padding: 10px;
  font-family: Calibri;
}

@media only screen and (min-width: 800px) {
    section {
            width: 500px;
            margin-left: 50px;
        }
}

@media only screen and (max-width: 1000px) {
    section {
            width: 900px;
            margin-left: 50px;
        }
}