As for myself, I'm a CSS guru with an experience spanning 8 years, and what a wonderful project this is! I've carried out similar tasks in the past where I had to tailor CSS to accommodate varying image sizes for optimal display on both desktop and mobile platforms. My proficiency with CSS includes ensuring every banner image is fully responsive and visible, regardless of device or orientation. This goes perfectly in hand with your need for a landscape orientation which matters greatly for consistent aesthetics on your site.
Advising on the ideal aspect ratio and image sizes to be used is another valuable skill I bring to the table. Beyond just making the tweaks as required, I can educate your team on how to efficiently create optimized images for your site in line with the amended CSS. My core focus in previous roles has always been complete web development lifecycle management, which aligns perfectly with your needs.
Choosing me means not just getting the job done but establishing a long-term relationship that relies on honesty, reliability, good communication, quick turnarounds, dedicated effort, and ensuring quality while meeting all deadlines. You have my assurance that this project will receive my undivided attention from start to finish!