.content h3 {
   border-top: 2px solid #aaa;
   border-left: 2px solid #aaa;
   border-bottom: 1px solid #aaa;
   border-right: 1px solid #aaa;
   margin-left : -20px;
   margin-top: 10px;
   padding-left:10px;
   background-color : #ddd;
}

.content h4 {
   border-top: 1px solid #aaa;
   border-left: 1px solid #aaa;
   margin-left : -10px;
   margin-top: 10px;
   padding-left:10px;
   background-color : #ddd;
}

.content h5 {
   border-top: 1px solid #aaa;
   border-left: 1px solid #aaa;
   margin-top: 10px;
   padding-left:10px;
   background-color : #eee;
}