During September 2025, Dimiter Topalov enhanced the PDF Viewer annotations styling in the telerik/kendo-themes repository, focusing on improving the display fidelity of links, text fields, checkboxes, and radio buttons. He implemented hover effects for link annotations and ensured that all changes were aligned with the existing design system and theming tokens, promoting consistency across themes and components. Using CSS, SCSS, and front-end development techniques, Dimiter maintained a clean, commit-driven workflow that supports reproducible feature delivery. His work addressed the need for visually accurate and interactive annotation elements, contributing to a more cohesive and user-friendly PDF viewing experience.