.footer-bg {
  background:#647A81;
  color: #fff; 
}

body .uk-nav li > a {
  display: inline-block!important;
  position: relative;
  padding-bottom: 5px;
}

body .uk-nav li > a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  height: 5px;
  width: 0;
  background-color: #000;
  transition: width 0.3s ease-in-out;
}

body .uk-nav li:hover > a::after {
  width: 100%;
}

body .uk-nav li.uk-active > a::after {
  width: 100%;
  background-color: #000;
}