form { width: 500px; margin: 30px auto; font-family: Verdana, Arial, sans-serif; font-size: 0.8em; }
    
    form fieldset       { border: 1px dashed #79C; padding: 10px; }
    form legend         { background-color: white; padding: 1px 4px; color: black; }
    form div            { padding: 6px 8px; }
    form div.bloc label { display: block; float: left; width: 30%; }
    form div.center     { text-align: center; }