I work as graphic designer (print) for more than 20 years i use adobe sets. what suitable app. i can use for web deign?

Adobe Muse you didn't worry any more on html and css or photoshop and illsutrator but .... must be Photoshop CC or Illustrator CC or else you can't generate a css on layer or an option to copy the css and paste it on adobe edge code... creating a website in there is100 percent responsive and its like creating an advertisement that no need to type html and css... good luck...

I think same tools can be used to design web designing, but you need to change the frame of mind to design for web, some of the differences are mentioned below

•     You are measuring your space in pixels.
•     You are faced with a challenge…designing your sites to look the best on all size monitors and at all monitor resolutions.
•     A consistent design, with consistent navigation (always in the same place) is key to keeping people on your site.
• You should learn about html and browsers and monitor resolutions.
• You dont deliver the whole design, you have to slice it for web and need to export and optimize the slices, so that it take minimum possible size for download over the web
• learn html,css & javascript to improve your graphic designing skills.

I use Adobe Muse on a daily basis a my web designing program.Widgets, CSS and social platform tools can be easily added onto your pages.Although measurements will be in pixels only.