div.bx-controls {
  margin-bottom: 50px;
}
 div.bx-controls a.bx-pager-link:hover, 
 div.bx-controls a.bx-pager-link:focus,
 div.bx-controls a.active {
    background: #999;
}
div.bx-controls > div.bx-pager-item:hover,
div.bx-controls > div.bx-pager-item:focus {
    background: #999;  
}