Mensaje al costado

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Se pueden hacer los cambios necesarios al código:
CSS:

<style type="text/css">
.destacado {
font-family: Georgia, "Times New Roman", Times, serif;
float:right;
color:#993300;
width:200px;
padding:6px;
margin:10px;
position:relative;
font-size:18px;
font-weight:normal;
text-align:left;
font-style: italic;
border-top:4px solid #CCC;
border-bottom:4px solid #CCC;
}
</style>

En la entrada se pone al principio:

<span class="destacado"> aca el mensaje</span>

Acá el resto del contenido ............

En lugar de span se puede utilizar div.