I need a clean, minimalistic banner-style email signature that will sit neatly at the bottom of five separate mailboxes on both Gmail and Yahoo. Each version will carry the same visual layout but swap in the correct personal title for the user. The banner must feature our company logo, full contact information, and our dedicated booking phone / WhatsApp number so recipients can reach us with a single tap. You are free to recommend the optimal dimensions and an HTML approach that keeps the code light, inline-styled, and compatible with the way Gmail and Yahoo strip external CSS. Please supply: • A layered design file (Figma, XD, or PSD) so we can make future tweaks. • Production-ready HTML with all images hosted (or embedded as base64 if you think that is more reliable). • A brief install guide showing where each element drops into Gmail and Yahoo settings. The signature must render crisply on desktop and mobile, avoid dark-mode surprises, and load instantly without tracking scripts.