body {
  background-image: url("mountains.jpeg");
}

table {
  background-color: whitesmoke;
  border: solid 2px slateblue;
  border-radius: 20px;
}

th {
  background-color: slateblue;
  padding: 10px;
  border-radius: 20px;
  padding-left: 20px;
  padding-right: 20px;
}

td {
  padding-left: 0px;
  padding: 3px;
  border-radius: 10px;
}

.NameHeader {
  border-bottom-left-radius: 0px;
  border-bottom-right-radius: 0px;
}

#content_container {
  background-color: whitesmoke;
  padding: 10px;
  padding-left: 20px;
  padding-right: 20px;
  text-align: center;
}

nav {
  background-color: slateblue;
  text-align: center;
}

nav a {
  display: inline-block;
  padding: 10px;
  padding-left: 20px;
  padding-right: 20px;
}

nav a:hover {
  background-color: slategray;
}

#site_container {
  margin-left: 100px;
  margin-right: 100px;
}