.sp-sticky{
  width: 100%;
  height: auto;
  display: block;
  position: fixed;
  z-index: 99;
  left: 0;
  top: 0;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
}
.sp-sticky-child{
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
}
.sp-sticky.sp-active{
  box-shadow: 0 2px 4px 0px rgba(0, 0, 0, .4);
}