This pattern works by tweaking the standard .masthead-inner.
To enabele we add the responsive .columns classes and .compact-for-data is added to header.masthead. We can also add .compact-disabled to dynamically disable the responsive nature.
Some guidance:
data-sticky-container on the masthead, after all the focus is meant to be on the data..colapse to .masthead-inner.row to remove margins on the child columns.In v1.2 we've already shaved 10px off the black bar, but the need remains for a yet-thinner div#masthead on inside pages that are search-result or data focused. In all it's 56% thinner than the current look.