DataTable：当我使用列组时，为什么固定宽度不起作用？

Question

这是我的列组，在我使用列组固定宽度工作之前。 如何修复宽度？

 <p:columnGroup type="header">
    <p:row >
        <p:column rowspan="2"  headerText="Accumed-Id"  filterStyle="width: 70px;" filterBy="#{item.claimId}"  filterMatchMode="contains"/>
        <p:column rowspan="2" headerText="Alert" style="width: 200px !important; " />
        <p:column rowspan="2" headerText="Severity" style="width: 50px !important;"  /> 
        <p:column rowspan="2" headerText="Short Description"   /> 
        <p:column rowspan="2" headerText="Long Description" /> 
        <p:column rendered="#{validateClaimsController.checkRulesByPass}" style="width:10%" colspan="3" headerText="ByPassed" />
    </p:row>
    <p:row >
        <p:column width="100" rendered="#{validateClaimsController.checkRulesByPass}" headerText="In" />
        <p:column rendered="#{validateClaimsController.checkRulesByPass}" headerText="Note" />
        <p:column rendered="#{validateClaimsController.checkRulesByPass}" headerText="By" />
    </p:row>
</p:columnGroup>