<table class="calendar_dayview_tableformatting">
..
<tr>
  <td class="calendar_dayview_cell">
    a href="#" class="calendar_dayview_dayformatting">09</a>
    <div class="preference">
      <div class="preference_appointment"></div>
    </div>
  </td>
</tr>
</table>

.preference {height: 60px; min-width:445px ; border: 1px solid #ffc61e; background-color: #ffc61e; margin-top: -1.4em; margin-left:2.5em; position:relative;}

.preference_appointment {height: 180px; min-width:445px ; border: 1px solid black; background-color: #f9eaad; position:absolute; margin-top:-1px;z-index:1;}