/*
* css from datatable-scroll-skin.css
*/
.aui-table-scroll-columns .aui-table-header {
    padding: 0;
}

.aui-table-x-scroller,
.aui-table-y-scroller-container {
    border: 1px solid #ddd;
}

.aui-table-scrollable-x .aui-table-y-scroller-container,
.aui-table-x-scroller .aui-table-table,
.aui-table-y-scroller .aui-table-table {
    border: 0 none;
}

/*
* custom
*/
.aui-table-header {
    background: #fff;
    border-bottom: 1px;
    border-bottom-color: #ddd;
    border-bottom-style: solid;
}

.aui-table-sort-indicator {
    _background: url(sort-arrow-sprite-ie.png) no-repeat 0 0;
    background: url(sort-arrow-sprite.png) no-repeat 0 0;
}
/*
* css from datatable-scroll-skin.css
*/
.aui-table-scroll-columns .aui-table-header {
    padding: 0;
}

.aui-table-x-scroller,
.aui-table-y-scroller-container {
    border: 1px solid #ddd;
}

.aui-table-scrollable-x .aui-table-y-scroller-container,
.aui-table-x-scroller .aui-table-table,
.aui-table-y-scroller .aui-table-table {
    border: 0 none;
}

/*
* custom
*/
.aui-table-header {
    background: #fff;
    border-bottom: 1px;
    border-bottom-color: #ddd;
    border-bottom-style: solid;
}

.aui-table-sort-indicator {
    _background: url(sort-arrow-sprite-ie.png) no-repeat 0 0;
    background: url(sort-arrow-sprite.png) no-repeat 0 0;
}

.aui-table-sorted {
    background: #f9f9f9;
}
Add datatable sort background indicator
Add datatable sort background indicator
