.ui-slider-horizontal a.ui-slider-handle 
{
    margin-left: -0.2em;    top: -0.3em;
}
div.ui-slider {
    height: 0.5em !important;
}

a.ui-btn.ui-slider-handle 
{
    height: 1em !important;
    margin: -0.5em 0 0 -0.5em !important;
    width: 1em !important; 
}