@charset "UTF-8";
body {
  background-color: gray;
}

#wrap {
  width: 960px;
  margin: auto;
  background-color: white;
}

header {
  padding: 40px;
  height: 80px;
}

nav {
  padding: 8px 40px;
  background-color: black;
  color: white;
}

main{
  padding: 40px;
  height : 400px;
}

footer {
  padding: 40px;
  height: 40px;
  background-color : black;
  color: white;
}

a {
  color: royalblue;
}

a:visited {
  color: navy;
}

a:hover {
  color: orange;
}

table tr:nth-of-type(even) {
  background-color: gray;
}