A designer has set up a page that uses elements that $1$ oat both left and right. Any further elements should not be allowed to be positioned beside a float element. Which of the following style snippets, when used as part of a CSS$3$ style, will prevent any subsequent elements from moving up alongside a float?

clear: all;

eloat: noner

clear: none;

clear: both;

float: clear$-$both: