docs: css: Make docs page wider while still accomodating narrow screens
docs: css: Make docs page wider while still accomodating narrow screens

Bump the width to 70em while keeping a maximum width of 95% to allow for
some border.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>

andreabolognani/libvirt,fabianfreyer/libvirt,eskultety/libvirt,jardasgit/libvirt,jardasgit/libvirt,eskultety/libvirt,nertpinx/libvirt,jfehlig/libvirt,nertpinx/libvirt,andreabolognani/libvirt,zippy2/libvirt,zippy2/libvirt,libvirt/libvirt,crobinso/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,andreabolognani/libvirt,crobinso/libvirt,jardasgit/libvirt,crobinso/libvirt,fabianfreyer/libvirt,eskultety/libvirt,jfehlig/libvirt,crobinso/libvirt,nertpinx/libvirt,eskultety/libvirt,eskultety/libvirt,libvirt/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,zippy2/libvirt,olafhering/libvirt,libvirt/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,olafhering/libvirt,olafhering/libvirt,libvirt/libvirt,jardasgit/libvirt,jfehlig/libvirt,nertpinx/libvirt,andreabolognani/libvirt,jardasgit/libvirt,olafhering/libvirt,zippy2/libvirt