How to make the width of Detail View control consisten when updating, viewing or inserting data?

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I have a DetailsView control on my website, and I notice when I edit, insert or simply displaying a record, the width of the fields vary. To make them consisten, I converted all of the fields to templateField, and had to change the 'width' property for each field within each template (ItemTemplate, EditTemplate, InsertTemplate). Is this the best or most efficient way of standardizing the DetailsView field widths? Perhaps there is a way to simply state the width once and all fields within DetailsView will inherit that value? Thanks,