Yes, Adobe Portfolio creates sites that are fully responsive. Your work will look great across devices with a responsive Theme optimized for all screen sizes. Preview your website on desktop, tablet, and mobile as you edit. You cannot make any mobile-specific customizations, except for the color of your Mobile Hamburger icon, found in Navigation settings.
Find the Preview option at the bottom of your Remote at all times.
After clicking "Preview," select a variety of screen sizes to
preview what your website will look like on all screen sizes.