Professional web design describes hiring a professional or experienced web designer or web design agency to create a unique website for you, versus using a website builder application like Wix or WordPress.20 web designer skills to have Know the principles of design. You don't need to know music theory to write a song, and if you've never taken an art class, you can still draw. ... Typography. ... Composition. ... Color Theory. ... Software for design. ... Content Management Systems (CMS) ... Responsive design. ... User Experience (UX