If there are any elements between the header and navigation bar, you will not be able to resolve this issue through CSS ... HTML. The HTML Code for Nested Lists. HTML offers a flexible way to ...

Create an HTML section for your navigation bar ... If you do not apply a background property to your navigation bar in CSS, it will display with a transparent background by default.

HTML and CSS form ... use it to create web apps that have all the features of native apps. There are six sessions in the course, each with video lectures, detailed notes, and sample code.