JSFiddle - React, Tailwind, and code Playground

HTML

<table id='myTable'>
		<tr class="we">
			<td>Samstag</td>
		</tr>
		<tr class="we">
			<td>Sonntag</td>
		</tr>
		<tr>
			<td>Montag</td>
		</tr>
		<tr class="dido">
			<td>Dienstag</td>
		</tr>
		<tr>
			<td>Mittwoch</td>
		</tr>
		<tr class="dido">
			<td>Donnerstag</td>
		</tr>
		</table>

CSS

#myTable td, th {
    border: 0.1px solid #D7D7D7;
    }

#myTable .tr.we td {
    background-color: #FFFFBF;
}
#myTable .tr.dido td {
    background-color: #FFFFFF;
}