Images scale to fit width of instructions panel (#1593)
Images scale to fit width of instructions panel (#1593)

* issue #1573 fixed -- images instructions scale to fit width of instructions panel

* postcss-cssnext dependency removed - updated postcsspresetenv config to handle nesting rules

* uninstalled postcss-cssnext dependency

* package-lock.json reset

* npm installed to update package-lock.json

* Revert package-lock.json to master

No changes to dependencies here, so no reason package-lock should change

popcodeorg/popcode,outoftime/learnpad,jwang1919/popcode,jwang1919/popcode,outoftime/learnpad,jwang1919/popcode,popcodeorg/popcode,popcodeorg/popcode,popcodeorg/popcode,jwang1919/popcode