h1{
  border:2px  solid #00F;
  padding:10px;
  margin-top:30px;
  margin-bottom:30px;
}
h2{
  border:2px solid #AAA;
  padding:5px;
  margin-top:15px;
  margin-bottom:15px;
}
nav{
  border: 2px solid #0F0;
  padding-right:10px;
  padding-left:10px;
  margin-top:0px;
}
li{
  margin-top:15px;
  margin-bottom:0;
}