{
const left_col = document.getElementById("left_col")
left_col.classList.remove('col-0')
left_col.classList.add("col-12", "col-md-4", "col-lg-3", "h-almost-full-md", "sticky-top-md")
const right_col = document.getElementById("right_col")
right_col.classList.add('d-none')
const middle_col = document.getElementById("middle_col")
middle_col.classList.remove("col-lg-7")
middle_col.classList.add("col-lg-9", "col-md-8")
const toc = middle_col.getElementsByClassName("toc")[0]
toc.remove()
left_col.appendChild(toc);
});
