Oyyy... Go to
the first landing of Apple, observed horizontal scrolling, Mish-mash of styles, not even glued in a single file and without trying to go somewhere on the bootstrap approach and there are
a lot of problems and everything works extremely slow and too clipped.
Focus on this level as technical specialist contraindicated, is trash.
What tools to use? Brand and influence of the company, the trust of users, and sometimes interesting ideas on design and interaction.
And technically - darkness.