Working with Page Layouts and Styling
VDL incorporates a default style sheet derived from a foundation based on Bootstrap 3.x. This arrangement inherits some rules on how you can augment the built-in styling that applies to container sizes and the horizontal spacing of elements.
VDL components can be placed within a hierarchy of containers that correspond closely to similarly-named container and layout classes in Bootstrap.
Where in VDL there are vdl-section, vdl-row and vdl-column tags, they correspond to container, row and col-*-* classes in Bootstrap 3.x.