body{
  background-color:#E9E9E9;
}

.main{
  background-color:white;
}

#navigation{
  padding:0;
  margin:0;
}

#navigation ul,li{
  display:inline;
  padding:0;
  margin:0;
}

#navigation a {
  display: block;
  padding: 5px 10px 5px 10px;
  float:left;
}

#navigation strong a {
  
}

.app div{
  padding-left:100px;
}
.app img{
  float:left;
  margin-right: 10px;
}

.description{
  margin-top: 2em;
  margin-bottom: 2em;
}