This solution still requires the th
widths to be calculated and set by jQuery
table.scroll tbody,
table.scroll thead { display: block; }
table.scroll tbody {
overflow-y: auto;
overflow-x: hidden;
max-height: 300px;
}
table.scroll tr {
display: flex;
}
table.scroll tr > td {
flex-grow: 1;
flex-basis: 0;
}
And the Jquery / Javascript
var $table = $('#the_table_element'),
$bodyCells = $table.find('tbody tr:first').children(),
colWidth;
$table.addClass('scroll');
// Adjust the width of thead cells when window resizes
$(window).resize(function () {
// Get the tbody columns width array
colWidth = $bodyCells.map(function () {
return $(this).width();
}).get();
// Set the width of thead columns
$table.find('thead tr').children().each(function (i, v) {
$(v).width(colWidth[i]);
});
}).resize(); // Trigger resize handler