Header cell does not match the length of the table

Kiba113

Hello,

right now I'm using these imports:

<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.11/css/dataTables.bootstrap.min.css"/>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/fixedcolumns/3.2.1/css/fixedColumns.bootstrap.min.css"/>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/fixedheader/3.1.1/css/fixedHeader.bootstrap.min.css"/>

The first import makes my table bigger and removes my set Bootstrap classes, so it looks wrong and does not fit on one page. If I remove it, the header mismatches the table.

How can I apply my bootstrap class or get the header to match the length?