Conditional Fomatting ranges that match another range - excel

Question

I'm creating a project in excel, and I want my cells to be automatically colored.
In what way can I color the cells in the range of C3: G16 with respect
to the cells equal to column A?
table.tableizer-table {
font-size: 12px;
border: 1px solid #CCC;
font-family: Helvetica, Arial, sans-serif;
text-align:center;
}
.tableizer-table td {
padding: 4px;
margin: 3px;
border: 1px solid #CCC;
}
.tableizer-table th {
background-color: #104E8B;
color: #FFF;
font-weight: bold;
}
<table class="tableizer-table">
<thead>
<tr class="tableizer-firstrow">
<th>A</th>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
<th>6</th>
<th>7</th>
<th>8</th>
</tr>
</thead>
<tbody>
<tr>
<td>19/8/19</td>
<td>19/8/2019</td>
<td>20/8/2019</td>
<td>21/8/2019</td>
<td>22/8/2019</td>
<td>23/8/2019</td>
<td>24/8/2019</td>
<td>25/8/2019</td>
<td>26/8/2019</td>
</tr>
<tr>
<td>19/8/19</td>
<td>19/8/2019</td>
<td>20/8/2019</td>
<td>21/8/2019</td>
<td>22/8/2019</td>
<td>23/8/2019</td>
<td>24/8/2019</td>
<td>25/8/2019</td>
<td>26/8/2019</td>
</tr>
<tr>
<td>19/8/19</td>
<td>19/8/2019</td>
<td>20/8/2019</td>
<td>21/8/2019</td>
<td>22/8/2019</td>
<td>23/8/2019</td>
<td>24/8/2019</td>
<td>25/8/2019</td>
<td>26/8/2019</td>
</tr>
</tbody>
</table>
Desired outcome:

Answer 1

Select range C3 to G16. Create a new conditional format rule with a formula, enter the formula =$A3=C3, and set the format that you want.