body {
  background: #c0c0c0;
  font-size: 16px;
  font-family: sans-serif;
  image-rendering: pixelated;
}

a {
  color: #00ff00;
}

h1 {
  font-size: 19px;
  margin-top: 8px;
  margin-bottom: 8px;
}

p {
  margin-top: 8px;
  margin-bottom: 8px;
}

table {
  border-collapse: collapse;
}

th {
  background: #dddddd;
  padding: 6px;
  border: black solid 1px;
}

td {
  padding: 6px;
  border: black solid 1px;
  text-align: center;
}

#contain {
  width: 650px;
  margin: auto;
  display: flex;
}

#nav {
  background: white;
  border-right: silver solid 8px;
  padding: 26px;
  padding-top: 16px;
  width: 100px;
  text-align: center;
}

#link {
  background: #50b050;
  padding: 10px;
  margin-bottom: 8px;
}

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

#page {
  background: white;
  padding: 26px;
  padding-top: 16px;
  width: 550px;
}