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Change the width of the iframe to 600px and height to 400px
Change the color Heading 3 to red
Change the width of the image to 60%
Change strong text to blue
Change the padding Heading 1 to 10px, background color green and color white.

This is the main heading that is wrapped in "h1" tags

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam malesuada vehicula dictum. Integer tristique sapien nec lectus lobortis placerat. MAKE THIS TEXT BOLD. Vestibulum molestie semper facilisis. Vestibulum finibus sit amet metus eget elementum. Morbi sed eros orci. MAKE THIS TEXT ITALIC. Nullam lacinia interdum felis sit amet aliquet.