"floating box" no longer floats

Hello,
Floating box is not displayed correctly because CSS instruction (div.floatinginfobox) missing.
You can test with this wiki code in a document:

{{box cssClass="floatinginfobox" title="**Sommaire**"}}
{{toc numbered="true" depth="3"/}}
{{/box}}

Note: http://extensions.xwiki.org/xwiki/bin/view/Extension/Box+Macro

Do you want I add this line at: messages.less or misc.less to correct it ?

div.floatinginfobox {
    background-color: #F3F3F3;
    float: right;
    margin: 0.66em 0 1em 1em;
    padding: 10px;
}

Thxs

Pascal B