.css-treeview ul,
.css-treeview li
{
    padding: 2px 2px 2px 10px;
    margin: 0;
    list-style: none;
}
 
.css-treeview input
{
    position: absolute;
    opacity: 0;
}
 
.css-treeview
{
    font: normal 14px Arial, Sans-serif;
    user-select: none;
}
 
.css-treeview a
{
    color: #00f;
    text-decoration: none;
}
 
.css-treeview a:hover
{
    text-decoration: none;
}
 
.css-treeview input + label + ul
{
    margin: 0 0 0 22px;
}
 
.css-treeview input ~ ul
{
    display: none;
}
 
.css-treeview label,
.css-treeview label::before
{
    cursor: pointer;
}
 
.css-treeview input:disabled + label
{
    cursor: default;
    opacity: .6;
}
 
.css-treeview input:checked:not(:disabled) ~ ul
{
    display: block;
}
 
.css-treeview label,
.css-treeview label::before
{
    background: url("images/treeicons.png") no-repeat;
}
 
.css-treeview label,
.css-treeview a,
.css-treeview label::before
{
    display: inline-block;
    height: 16px;
    line-height: 16px;
    vertical-align: middle;
}
 
.css-treeview label
{
    background-position: 18px 0;
}
 
.css-treeview label::before
{
    content: "";
    width: 16px;
    margin: 0 22px 0 0;
    vertical-align: middle;
    background-position: 0 -32px;
}
 
.css-treeview input:checked + label::before
{
    background-position: 0 -16px;
}
 
/* webkit adjacent element selector bugfix */
@media screen and (-webkit-min-device-pixel-ratio:0)
{
    .css-treeview 
    {
        -webkit-animation: webkit-adjacent-element-selector-bugfix infinite 1s;
    }
 
    @-webkit-keyframes webkit-adjacent-element-selector-bugfix 
    {
        from 
        { 
            padding: 0;
        } 
        to 
        { 
            padding: 0;
        }
    }
}