body {
  display: grid;
  grid-template-columns: 150px auto;
  grid-template-rows: 75px auto 25px;
}

h1 {
  text-align: center;
}

p {
  font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
  text-align: justify;
}

h1, h2, h3, h4, h5 {
  font-family: Arial, Helvetica, sans-serif;
}

header {
  background-color: darkgrey;
  grid-column: 1 / 3;
  grid-row: 1 / 2;
}

nav {
  background-color: gray;
  grid-column: 1 / 2;
  grid-row: 2-3;
  border: 15px;
  border-color: black;
}

section {
  grid-column: 2 / 3;
  grid-row: 2 / 3;
}

.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: black;
    color: white;
    text-align: center;
    grid-column: 1 / 3;
    grid-row: 3-4;
  }

a {
  text-decoration: none;
  color: whitesmoke;
}

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

td {
  width: 8;
  text-align: center;
}
th, tr:nth-child(odd)
{
  background-color: #DDDDDD;
}