Responsive header when zooming out

ArielSAdamsNASA

Link to test case: http://live.datatables.net/joviyori/1
Description of problem: When zooming out in the test case to 25%, the header does not align with the columns in the table. How would I fix this?

ArielSAdamsNASA

Fixed it by adding:

.dataTables_scrollHeadInner{
    width: 100% !important;
}
.dataTables_scrollHeadInner table{
    width: 100% !important;
}

as seen here: http://live.datatables.net/galaxafo/2