Resize the "breadcrumbs" navigation section to fit the content, and stack it below the top navigation bar#680

stefanv merged 2 commits intoscientific-python:mainscientific-python/scientific-python-hugo-theme:mainfrom

agriyakhetarpal:fix-breadcrumbs-overlayagriyakhetarpal/scientific-python-hugo-theme:fix-breadcrumbs-overlayCopy head branch name to clipboard