<style>
.bigslam-navigation-slide-bar-long {
  display: none;
}
</style>

<script>
var element = document.querySelector('.bigslam-navigation-slide-bar-long');
element.classList.remove('bigslam-navigation-slide-bar-long');
</script>

<script>
var elements = document.getElementsByClassName('bigslam-navigation-slide-bar-long');
for(var i = 0; i < elements.length; i++) {
  elements[i].classList.remove('bigslam-navigation-slide-bar-long');
}
</script>