rich:dataTable columnClasses attribute issue - jsf-2

Question

Version :
RichFaces 4.3.5
Apache MyFaces 2.1
Issue :
We are migrating from JSF 1.2 to JSF2.
As shown in below code , rich:dataTable uses columnClasses attribute to style columns.
The issue is columnClasses are not getting applied repetitively .
That is , if there are four columns , we need to specify four columnClasses attribute values separately like columnClasses=column1,column1,column1,column1.
This is really annoying since I need to use same columnClass for all columns.
I tried using spaces for columnClasses like columnClasses=column1 column1 , but no success.
Has anybody faces same issue ? Is there any workaround for this apart from specifying columnClasses manually ?
Code :
<rich:dataTable id="userList" styleClass="style1" headerClass="header1" rowClasses="table_evenRow,table_oddRow"
columnClasses="column1,column1,column1,column1" value="#{bean.userList}" var="user">
<f:facet name="header">
<rich:columnGroup columnClasses="table_header">
<h:column>
<h:outputText value="First Name" />
</h:column>
<h:column>
<h:outputText value="Last Name" />
</h:column>
<h:column>
<h:outputText value="Email" />
</h:column>
<h:column>
<h:outputText value="Phone" />
</h:column>
</rich:columnGroup>
</f:facet>
<h:column>
<h:outputText value="#{user.firstName}" />
</h:column>
<h:column>
<h:outputText value="#{user.lastName}" />
</h:column>
<h:column>
<h:outputText value="#{user.email}" />
</h:column>
<h:column>
<h:outputText value="#{user.phoneNum}" />
</h:column>
</rich:dataTable>

Answer 1

I had the same issue and as Vasil Lukach mentioned in a comment, columnClasses="right,left,"... only adds a css class to the td elements in the dom-tree.
e.g.:
<td id="form:table:0:j_idt36" class="rf-dt-c right">2</td>
In order to have an effect some css is required:
.left {
text-align: left;
}
.right {
text-align: right;
}