table{
    width:90%;
}
td{
    width:30%;
}
tr{
what should go here?
}



 <table>
      <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
      </tr>
      <tr>
        <td>4</td>
        <td>5</td>
        <td>6</td>
      </tr>
      <tr>
        <td>7</td>
        <td>8</td>
        <td>9</td>
      </tr>
<table>

td { width: 33%; padding-bottom: 33%; height: 0; }
td div { position: absolute }