HTML CSS Table positioning within a div - html

Question

I have the below working example which I need tweaking slightly:
As you can see there are two centre aligned Tables. With a list of vertical buttons below left aligned.
The tables can have different numbers of <tr>'s and I want the tables to be equally aligned at the top not from the bottom. I.e. I want no gap at the top of the table 2. Does anyone know how I can amend this?
https://jsfiddle.net/Jaron787/gg30jgh5/16/
HTML
<div id="lse" class="display">
<div id="centertbl">
<table id="tblData" class="TSS">
<tr>
<td align="center" colspan="4"><b>Table 1</b></td>
</tr>
<tr>
<td align="center" colspan="4">Data 1</td>
</tr>
<tr>
<td align="center" colspan="4">Data 2</td>
</tr>
</table>
<table id="tblData" class="TSS">
<tr>
<td align="center" colspan="4"><b>Table 2</b></td>
</tr>
<tr>
<td align="center" colspan="4">Data 1</td>
</tr>
</table>
</div>
<input type="submit" class="button button1" name="submitButton" value="Button 1">
<input type="submit" class="button button1" name="submitButton" value="Button 2">
<input type="submit" class="button button1" name="submitButton" value="Button 3">
<input type="submit" class="button button1" name="submitButton" value="Button 4">
</div>
CSS
.TSS {
border: 1px solid #000000;
float: none;
font-family: Verdana,Geneva,sans-serif;
font-size: 10.6px;
font-style: normal;
padding: 10px;
text-decoration: none;
display: inline-block;
}
#centertbl {
text-align: center;
}
.button {
background-color: #4CAF50;
/* Green */
border: none;
color: white;
padding: 5px 15px;
text-align: center;
text-decoration: none;
display: block;
font-size: 16px;
margin: 4px 2px;
-webkit-transition-duration: 0.4s;
/* Safari */
transition-duration: 0.4s;
cursor: pointer;
}
.button1 {
background-color: white;
color: black;
border: 2px solid #4CAF50;
}
.button1:hover {
background-color: #4CAF50;
color: white;
}

Answer 1

Add this to your .TSS class:
vertical-align: top;
I have added it to your code below; try running it:
.TSS {
border: 1px solid #000000;
float: none;
font-family: Verdana,Geneva,sans-serif;
font-size: 10.6px;
font-style: normal;
padding: 10px;
text-decoration: none;
display: inline-block;
vertical-align: top;
}
#centertbl {
text-align: center;
}
.button {
background-color: #4CAF50;
/* Green */
border: none;
color: white;
padding: 5px 15px;
text-align: center;
text-decoration: none;
display: block;
font-size: 16px;
margin: 4px 2px;
-webkit-transition-duration: 0.4s;
/* Safari */
transition-duration: 0.4s;
cursor: pointer;
}
.button1 {
background-color: white;
color: black;
border: 2px solid #4CAF50;
}
.button1:hover {
background-color: #4CAF50;
color: white;
}
<div id="lse" class="display">
<div id="centertbl">
<table id="tblData" class="TSS">
<tr>
<td align="center" colspan="4"><b>Table 1</b></td>
</tr>
<tr>
<td align="center" colspan="4">Data 1</td>
</tr>
<tr>
<td align="center" colspan="4">Data 2</td>
</tr>
</table>
<table id="tblData" class="TSS">
<tr>
<td align="center" colspan="4"><b>Table 2</b></td>
</tr>
<tr>
<td align="center" colspan="4">Data 1</td>
</tr>
</table>
</div>
<input type="submit" class="button button1" name="submitButton" value="Button 1">
<input type="submit" class="button button1" name="submitButton" value="Button 2">
<input type="submit" class="button button1" name="submitButton" value="Button 3">
<input type="submit" class="button button1" name="submitButton" value="Button 4">
</div>