Hello,
Consider using the following code to control the Width of the Table Columns:
<table id="datatable1" class="table table-striped table-bordered" cellspacing="0" width="100%">
<colgroup>
<col span="1" style="width: 25%;">
<col span="1" style="width: 30%;">
<col span="1" style="width: 15%;">
<col span="1" style="width: 10%;">
<col span="1" style="width: 20%;">
</colgroup>
<thead>
<tr>
<th>Title</th>
<th>Scripture</th>
<th>Speaker</th>
<th>Date</th>
<th>Series</th>
</tr>
</thead>
...
</table>
This will definitely work fine. Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.