Familiarize yourself with the WHMCS template structure. Themes are usually stored in the "templates" folder.
It's recommended to create a child theme to avoid losing customizations during WHMCS updates.
Integrate a responsive framework like Bootstrap to ensure your theme adapts to various screen sizes.
Create a responsive navigation menu that works well on both desktop and mobile devices.
Optimize font sizes, spacing, and elements to provide a seamless experience on smaller screens.
Design a clean and functional header and footer. Include essential links, contact information, and a search bar if necessary.