style sheet for tree view control in asp.net

.AspNet-TreeView {
    width: 200px;
    border-top: solid 1px #DDD;
}
 
.AspNet-TreeView ul {
    list-style: none; 
}
 
.AspNet-TreeView-Leaf {
    border-bottom: solid 1px #DDD;
    background: url(../../images/structure/node-dot.gif) 8px 9px no-repeat;  
}
 
.AspNet-TreeView-Root {
    border-bottom: solid 1px #DDD; 
}
 
.AspNet-TreeView-Root a {
    display: block;
    width: 170px;
    margin-left: 20px;
    padding: 5px 5px 5px 5px; 
}
 
.AspNet-TreeView-Selected {
    background: #F6F6F6 url(../../images/structure/arrow-right.gif) 8px 9px no-repeat;
}
 
.AspNet-TreeView-Expand {
    display: block;
    float: left;
    margin: 9px 0px 0px 8px;
    padding: 6px 4px 5px 4px;
    height: 0px !important;
    background: url(../../images/structure/node-plus.gif) 0px 0px no-repeat;
    cursor: pointer;
}
 
.AspNet-TreeView-Collapse {
    display: block;
    float: left;
    margin: 9px 0px 0px 8px;
    padding: 6px 4px 5px 4px;
    height: 0px !important;
    background: url(../../images/structure/node-minus.gif) 0px 0px no-repeat;
    cursor: pointer;
}
 
.AspNet-TreeView-Show li {
      border-top: solid 1px #DDD;
      background-position: 28px 9px;
}
 
.AspNet-TreeView-Hide {
    display: none;
}
 
.AspNet-TreeView ul li ul li {
    text-indent: 20px;
    border-bottom: none;
    font-size: 11px;
}