#Css

Given the following HTML and CSS rules, what will be the final color of the 'Hi' text? Explain why by discussing CSS specificity, selector priority, and how the result changes if the CSS rules are rearranged.

Given a parent <div> and a child <div>, how would you center the child horizontally and vertically inside the parent using CSS?

Given a parent container with `display: flex`, how would you make the children wrap to the next line, while ensuring each child takes 1/3 of the available width and all children have equal widths?

Create a sticky header that remains fixed at the top while scrolling. The header should also keep the content centered using CSS.

Make the application responsive for mobile devices.