Question

the table header I want:

<table class="tabel_op_panou" style="margin: 0px 2px 0px 2px; width: 99%; table-layout:fixed;">
<tr>
    <th rowspan="2" style="width: 35%;">A</th>
    <th colspan="2" style="width: 25%;">B</th>
    <th colspan="3" style="width: 40%;">C</th>
</tr>
<tr>
    <th style="width: 8%;">B1</th>
    <th style="width: 17%;">B2</th>
    <th style="width: 8%;">C1</th>
    <th style="width: 17%;">C2</th>
    <th style="width: 15%;">C3</th>
</tr>

The problem is no matter how I set the widths, the 2nd row stays the same. I tried percentages and fixed pixel widths.

Removing table-layout from the style seems to work but I need the fixed layout. Is there any way to do it while keeping “table-layout: fixed”?

I want the layout in the end to look something like this but with table-layout: fixed/

Answer 1

table-layout:fixed:

Table and column widths are set by the widths of table and col
elements or by the width of the first row of cells. Cells in
subsequent rows do not affect column widths.

So, you can modify your code like this:

<table class="tabel_op_panou" style="margin: 0px 2px 0px 2px; width: 99%;border:1px solid grey;table-layout:fixed;">
    <col style="width: 35%;"/>
    <col style="width: 8%;"/>
    <col style="width: 17%;"/>
    <col style="width: 8%; "/>
    <col style="width: 17%;"/>
    <col style="width: 15%;"/>
<tr>
    <th rowspan="2" style="width: 35%; border:1px solid grey;">A</th>
    <th colspan="2" style="width: 25%; border:1px solid grey;">B</th>
    <th colspan="3" style="width: 40%; border:1px solid grey;">C</th>
</tr>
<tr>
    <th style="width: 8%; border:1px solid grey;">B1</th>
    <th style="width: 17%; border:1px solid grey;">B2</th>
    <th style="width: 8%; border:1px solid grey;">C1</th>
    <th style="width: 17%; border:1px solid grey;">C3</th>
    <th style="width: 15%; border:1px solid grey;">C4</th>
    </tr>
</table>

See demo: http://jsfiddle.net/rRJU7/2/