position: fixed;

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:

This div element has position: fixed;