.xml
   .tag
     {
     color: black;
     font-weight: normal; 
     }
     
.xml
   .tag .title
     {
     color: purple;
     font-weight: bold; 
     }

.xml
  .tag .attribute
    {
    color: black;
    font-weight: bold; 
    }

.xml
  .tag .attribute .value
    {
    color: blue;
    font-weight: normal; 
    }

.xml
   .comment
     {
     color: green;
     font-weight: normal; 
     }