CSS question

hi! i am not sure exactly where i should be posting this but i am working on a site and I am using a theme that i have purchased but the developer seems overwhelmed and doesn’t respond to support frequently… i have been customizing the site using css and i am stuck somewhere: i have tried to figure out how to display the ipad surrounding the video on an iphone… i thought maybe someone with better css skills could take a look and see what i am missing…. i am going out on a limb here… but thanks in advance! Site