I made a simple web app and I am trying to optimize the css for mobile viewing. I need all the images on the page to scale to the appropriate aspect/ratio within the mobile browser. I have been looking for information regarding this and although I have found a lot of material on making websites from scratch, I can't figure out how to do it from an existing website. I don't want my web app to have scrollable ability. Any references/tutorials that could assist me I would greatly appreciate.