JSFiddle - React, Tailwind, and code Playground

HTML

<table id='even' width='570px'>
                 <tr class='f1'><td>Hodnota</td><td>Hodnota2</td><td>Hodnota3</td></tr>
                 <tr><td>radek2Hodnota</td><td>radek2Hodnota2</td><td>radek2Hodnota3</td></tr>
                 <tr><td>radekHodnota</td><td>radek3Hodnota2</td><td>radek3Hodnota3</td></tr>
                </table>

CSS

table#even tr:nth-child(odd) td {background:#aaa;}
table#even tr:nth-child(even) td {background: #aaafff;}