How to align controls in flexbox and add icon or image to page headers?

Hi everyone,

                    I have to add icon to the right of the page title so that it will be available for every view in the application so if my image is in a folder how can i access its source url and align it to right because my view contains navbutton(back) to switch between pages so i want my app icon to be on the right.

Also i am stucked with flexbox as all you know that flexbox puts every control in the middle according to bootstrap theme and only single control is in one row of flexbox. I want to arrange my 2 controls in one row in flexbox likewise >> Name : [Text box]

                                                                                                                    Age   : [ComboBox]

                                                                                                                    [SaveButton] [CancelButton]

I know to apply css styles but with flexbox i am stucked coz it has its own style. So please tell me a simple and best way to resolve this ASAP.

Regards to all,