/* CSS code for Simpsons grades case study example */
#navigation li {
  display: inline;
  padding: 0.5em;
  background-color: #ddd;
  border: 3px outset gray;
  margin: 1em 1em 2em 1em;
}

h1, #navigation, #flash {
  text-align: center;
}

table th {
  border-bottom: 1px solid #aaa;
  text-align: left;
}

table th, table td {
  padding-right: 1em;
}

#flash {
  background-color: #ffffcc;
  border: 1px dotted #ccccaa;
  margin: 0.5em;
  padding: 0.5em;
}

h1, h2 {
  margin: 0.5em;
}