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HTML/CSSBeginner#css#display
block starts on a new line and fills width (div, p). inline flows within text and ignores width/height (span, a). inline-block flows inline but respects width/height/margin. none removes the element from layout entirely (still in DOM).
span { display: inline-block; width: 100px; height: 40px; }
.hidden { display: none; }