h1, h2 {
    text-align: center;
    font-family: Tahoma, Verdana, sans-serif;
}

table, th, td {
  border: 1px solid black;
  border-spacing: 3px;
  font-family: Tahoma, Verdana, sans-serif;
}

tr:nth-child(even) {
  background-color: #D6EEEE;
}

th {
    padding: 5px;
    
}