Intelligent,
Html (+/-)
<table>
<tr>
<td>ширина</td>
<td>ширина</td>
<td>ширина</td>
<td>ширина</td>
<td>ширина</td>
</tr>
</table>CSS (+/-)
/* mobile */
@media screen and (max-width: 768px) {
tr td {
width: 20%;
}
}
td {
width: 64px;
}