Use {{Clear}} after any floating elements and before elements you do not wish to float together with the first set. This does not use a line break, unlike {{-}}.
Parameters
1: (Default:both) You can you set the template to only clear left or right floats. Accepts the values: left, right, both and none.
Examples
See Wikipedia:Template:Clear for examples.
This is the documentation page, it should be transcluded into the main template page. See Template:Doc for more information.