how can i create full background and add button on the background pic?

thank you!!

thats what i want but it didnt disappear i will show you the picture is that right or wrong?

I have type Placeholder in properties and it stills doesnt work? it didnt disappearance when i click on the box

thanks for your help

so explain how can i use a forward button? thanks

How to add a back and forrward buttons? cant find them on components thanks

Wow quick respond! I have been trying to create start up app was 2 buttons which are "register" and "log in" it's so hard to do it I managed to create buttons but it doesn't work and I don't know how people can register or log in from phone app

I would like to create an app something like Instagram so can you help me how to start build app like instagram? can you tell me the list of order how to create app would be helpful please?