html - Add css rule specific to component with multiple classes -

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i have following html code:

<li id=treemenu:2 class="ui-treenode ui-treenode-leaf ui-treenode-unselected" role=treeitem sizset="false" data-nodetype="default" data-rowkey="2" sizcache0014053099738481567="771 85 282">     <span aria-expanded=false aria-checked=false class="ui-treenode-content ui-tree-selectable" aria-selected=false sizset="false" sizcache0014053099738481567="771 85 282">         <span class=ui-treenode-leaf-icon></span>         <div class="ui-chkbox ui-widget" sizset="false" sizcache0014053099738481567="771 85 282">             <div class="ui-chkbox-box ui-widget ui-corner-all ui-state-default">                 <span class="ui-chkbox-icon ui-c"></span>             </div>         </div>         <span></span>         <span class="ui-treenode-label ui-corner-all">dfvc</span>     </span> </li>

i need add css rule li components "ui-treenode ui-treenode-leaf ui-treenode-unselected" class , besides applies div component inside on li:

<div class="ui-chkbox ui-widget" sizset="false" sizcache0014053099738481567="771 85 282">

i've created following rule doesn't work

li .ui-treenode-leaf span div .ui-chkbox {    position: relative !important;    top: -15px !important;  }

i'm working on ie8 , html generated node (node without leaf) of tree component of "primefaces" (tree component on showcase example)

what correct css rule?

one problem have rule looking tag class 'tree-node-leaf' within li.

to indicate want target tag specific class, not put space between tag , class.

li.tree-node-leaf targets li class.

li .tree-node-leaf targets tag class tree-node-leaf within li.

the same done id selectors, li#id targets li id of id. li #id targets element id id within li.

as pavlo has said, should try keep selectors simple possible - increases maintenance , reduces chances of small mistakes becoming big problems.

try this:

li.ui-treenode-leaf span div.ui-chkbox {    position: relative !important;    top: -15px !important;  }

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