When should we use float vs. margin:auto to center elements? Do we use both? Can you please give more examples about how to make different elements in the center? can we talk about centering elements? I'm still a little confused about what all the answer options do. How does float wrap text around an image? I want to know a little more about relative and absolute positions. when to use position:relative vs position:absolute The idea of ancestor in the question of ""to place an item using a coordinate system A. put position:absolute on the ancestor and position:relative on the positioned element"" Could you elaborate more on the concept of a non-static ancestor? how do we set relative position on the ancestor? Could you explain with examples and html what shrink&grow of flex items work? In the flex basis is the auto default the only option we have? can you review the syntax for flex, the "grow shrink basis" you talked about in the Flexbox section. i'm confused about how the grow and shrink works and how that is determined Could we have more practice with flexboxes? Can you help clarify the sixth question in the quiz? / On the last question about inline block elements I thought both B and C kind of made sense. Can you tell us more about the inline block elements and the properties they do or do not inherit from both inline elements and block elements. Can we talk more about inline blocks, like visually. "Confused about the syntax here for heigh allocation: html, body { height: 100%; } body { display: flex; flex-direction: column; }"