Fix table header at top of scrollable div

Question

The div in this example is scrollable, how do I make the header of the table fixed to the top of the div?

        
                      

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Answer 1

I would split into 2 sections and dictate the widths (% if responsive).

<table id="table-top">
<tr>
<th>A</th>
<th>B</th>
</tr>
</table>
<div id="table">
<table id="table_id">
<tr>
<td>A</td>
<td>B</td>
</tr>
<tr>
<td>A</td>
<td>B</td>
</tr>
<tr>
<td>A</td>
<td>B</td>
</tr>
</table>
</div>

CSS....

#table{
    overflow-y: auto; 
    height:150px;
    border-bottom:1px solid grey;
}
table{
    width:100%;
}
table td, table th{
    border-color: grey;
    border: 1px solid;  
    width:50%;
}

https://jsfiddle.net/tonytansley/mvp4u54q/