The way skins are modified hasn't changed much over the years, so editing an existing skin would typically consist of the following steps

Find the skin folder (either in /portals/skins/SKINNAME or /portals/#/skins/SKINNAME where # is the PortalID if the existing portal, most likely 0).

Once you find the skin folder you should look at the ASCX files in there, you'll likely see multiple ASCX Files, that should match up to the skins available on your website.

From there you can either edit the ASCX files, or the CSS files, or both, to make changes to your skins.

To get a more specific response you will need to provide additional details on your setup.

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Chris Hammond
Former DNN Corp Employee, MVP, Core Team Member, Trustee
Christoc.com Software Solutions DotNetNuke Module Development, Upgrades and consulting.
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