body {
  background-color: lightgrey;
  font-family: "Lucida Sans";
}

.topnav {
  font-family: sans-serif;
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  padding: 14px 16px;
  text-decoration: none;
}

.topnav a:hover {
  background: #ddd;
  color: black;
}

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

a:hover {
  color: blue;
}

body {
  margin-top: 60px;
  margin-bottom: 40px;
}

.container {
  display: grid;
  align-items: center;
  grid-template-columns: 1fr 1fr 1fr;
  column-gap: 5px;
}

footer {
  font-family: sans-serif;
  font-size: small;
  margin-top: auto;
  position: fixed;
  bottom: 0;
  right: 10px;
}