How to remove border from specific PrimeFaces p:panelGrid?

I have difficulty in removing border from a specific PrimeFaces <p:panelGrid>.

<p:panelGrid styleClass="companyHeaderGrid">
    <p:row>
        <p:column>
            Some tags
        </p:column>
        <p:column>
            Some tags
        </p:column>
    </p:row>
</p:panelGrid>

I have been able to remove border from the cells with:

.companyHeaderGrid td {
    border: none;
}

But

.companyHeaderGrid {
    border: none;
}

Does not work.

Solution 1:

The border is been set on the generated tr and td elements, not on the table. So, this should do:

.companyHeaderGrid.ui-panelgrid>*>tr,
.companyHeaderGrid.ui-panelgrid .ui-panelgrid-cell {
    border: none;
}

How I found it? Just check the generated HTML output and all CSS style rules in the webdeveloper toolset of Chrome (rightclick, Inspect Element or press F12). Firebug and IE9 have a similar toolset. As to the confusion, just keep in mind that JSF/Facelets ultimately generates HTML and that CSS only applies on the HTML markup, not on the JSF source code. So to apply/finetune CSS you need to look in the client (webbrowser) side instead.

See also:

• How do I override default PrimeFaces CSS with custom styles?
• Remove border from all PrimeFaces p:panelGrid components

If you're still on PrimeFaces 4 or older, use below instead:

.companyHeaderGrid.ui-panelgrid>*>tr,
.companyHeaderGrid.ui-panelgrid>*>tr>td {
    border: none;
}

Solution 2:

I am using Primefaces 6.0 and in order to remove borders from my panel grid i use this style class "ui-noborder" as follow:

<p:panelGrid columns="3" styleClass="ui-noborder">
   <!--panel grid contents -->
</p:panelGrid>

It uses a css file named "components" in primefaces lib