html {
  position: relative;
  min-height: 100%;
}

.sticky.is-sticky {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
}