No special actions required, all sites you make with Mobirise are mobile-friendly. You don't have to create a special mobile version of your site, it will adapt automagically.
Mobirise is an easy website builder - just drop site elements to your page, add content and style it to look the way you like.
Mobirise offers many site blocks in several themes, and though these blocks are pre-made, they are flexible. You can combine blocks in different ways on your pages.
Mobirise gives you the freedom to develop as many websites as you like given the fact that it is a desktop app.
Publish your website to a local drive, FTP or host on Amazon S3, Google Cloud, Github Pages. Don't be a hostage to just one platform or service provider.
Just drop the blocks into the page, edit content inline and publish - no technical skills required.