#branding{
  border-bottom: 1px solid gray;
}

#container{
  margin: auto auto;
  width: 800px;
}

#main_content{
  padding-left: 15px;
  width: 500px;
  float: left;
}

#sidebar{
  margin-left: 550px;
  width: 250px;
}


#footer{
  clear: left;
  text-align: right;
}

code{
  background-color: lightgray;
}