kubernetes-handbook/gitbook/gitbook-plugin-tbfed-pagefooter/footer.css

.page-footer {
  margin-top: 50px;
  border-top: 1px solid #ccc;
  overflow: hidden;
  padding: 10px 0;
  font-size: 12px;
  color: #808080;
}
.page-footer a {
  color: #808080!important;
  text-decoration: underline!important;
}
.footer-modification {
  float: right;
}