11. Describe two techniques that can be used to place one element on the top of another element (look at UD's logo) 12. There is a div element with id-dv. Write javascript codes to set its background...

question no.13   please solve

Extracted text: 11. Describe two techniques that can be used to place one element on the top of another element (look at UD's logo) 12. There is a div element with id-dv. Write javascript codes to set its background color to "green" 13. There is only one top-level div right below the body without assigned id. Write atwo lines of javascript codes to switch their text color from red to orange periodically once in every second.