It wouldn't be possible to cover everything in a job description (JD) in a cover letter - but it is important to cover:
- Why specifically this opportunity (more so why this department/role rather than "why this firm")
- Highlighting your key skills/experiences that align with some of the JD's requirements that you think are less obvious from your CV or aspects you particularly want to highlight - this should effectively be the "why you" part of a cover letter
What length do you recommend for a a cover letter for a paralegal role? Would 2 pages be too much?