🔥 Another great use case for Flexbox is when you want a label to span "the rest" of the width beside an input without knowing widths
🔥 CSS case insensitive attribute selectors are coming! Part of Selectors Level 4.
🔥 Flexbox tip: In most cases, margin: auto; on flex-items does the same thing as justify-content: center; align-items: center;
margin: auto;
justify-content: center; align-items: center;