JSFiddle - React, Tailwind, and code Playground

HTML

<table id="tic" cellpadding="0" cellspacing="0" border="5" bordercolor="black" bordercolorlight="gray" bgcolor="white">
    <tr>
        <td width="55" height="55" class="x"></td>
        <td width="55" height="55" class="o"></td>
        <td width="55" height="55" class="x"></td>
    </tr>
    <tr>
        <td width="55" height="55" class="o"></td>
        <td width="55" height="55" class="x"></td>
        <td width="55" height="55" class="o"></td>
    </tr>
    <tr>
        <td width="55" height="55" class="x"></td>
        <td width="55" height="55" class="o"></td>
        <td width="55" height="55" class="x"></td>
    </tr>
</table>

CSS

table{
    text-align:center;
    font-size:2em;
    font-weight:bold;
}
td.o:after{
    content:"\9675";
    font-weight:bold;
}
td.x:after{
    content:"\2716"
}