CSS Tooltip - overlapping problem

HTML

<table>
  <tbody>
    <tr>
      <td class="tooltipContainer">Tooltip Container 1-1
        <div class="tooltip">
          Contents of tooltip container 1-1... works
        </div>
      </td>
      <td class="tooltipContainer">Tooltip Container 1-2
        <div class="tooltip">
          Contents of tooltip container 1-2... works
        </div>
      </td>
    </tr>
    <tr>
      <td class="tooltipContainer">Tooltip Container 2-1
        <div class="tooltip">
          Contents of tooltip container 2-1... doesn't work as it's covered by tooltip 1-1 contents
        </div>
      </td>
      <td class="tooltipContainer">Tooltip Container 2-2
        <div class="tooltip">
          Contents of tooltip container 2-2... doesn't work as it's covered by tooltip 1-2 contents
        </div>
      </td>
    </tr>
    <tr>
      <td>Non-tooltip Container 3-1</td>
      <td>Non-tooltip Container 3-2</td>
    </tr>
    <tr>
      <td>Non-tooltip Container 4-1</td>
      <td>Non-tooltip Container 4-2</td>
    </tr>
    <tr>
      <td class="tooltipContainer">Tooltip Container 5-1
        <div class="tooltip">
          Contents of tooltip container 5-1... works
        </div>
      </td>
      <td class="tooltipContainer">Tooltip Container 5-2
        <div class="tooltip">
          Contents of tooltip container 5-2... works
        </div>
      </td>
    </tr>
  </tbody>
</table>

CSS

.tooltipContainer {
	position: relative;
}

.tooltip {
	position: absolute;
	outline: none;
	width: 500px;
	background-color: #e86d6d;
	color: black;
	border-radius: 5px;
	box-shadow: 5px 5px 8px rgba(55, 55, 55, .65);
	z-index: 10;
	word-break: break-word;
	padding: 10px;
	opacity: 0;
	-webkit-transition: opacity .8s;
	-moz-transition: opacity .8s;
	-ms-transition: opacity .8s;
	-o-transition: opacity .8s;
	transition: opacity .8s;
}

.tooltipContainer:hover .tooltip {
	opacity: .95;
}