A generic division
div

The div element is an all-purpose grouping mechanism for positioning, sizing, boxing and styling.
It may be used wherever such needs cannot be met by its more specific cousins: the "article", "section" and "aside" elements.
Example
article {
h1 Moon landing
div {
Contents
ol {
li Crewed landings
li Scientific background
li Political background
}
}
section {
h2 Crewed landings
...
}
section {
h2 Scientific background
...
}
section {
h2 Political background
...
}
}