.metabox-holder
{
    width:100%;
}
.column-id
{
    width: 9% !important;
}
.column-status
{
    width: 10% !important;
}
.column-by
{
    width: 15% !important;
}
.column-date
{
    width: 20% !important;
}
.column-prop
{
    width: 20% !important;
}