Corporate Seminar Invitation Microsite

I need a small, single-page microsite that immediately feels professional and corporate, putting the spotlight and a concise company intro. The page will serve as our official invitation to an upcoming seminar, so it must be polished, mobile-friendly, and ready to launch as soon as possible... (Budget: $10 - $30 USD, Jobs: CSS, Event Management, Graphic Design, HTML, JavaScript, Mobile App Development, PHP, Web Design, Web Development, Website Design)