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CSS margin-block-start 属性
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<!DOCTYPE html> <html> <head> <style> div { background-color: lightblue; } div.ex1 { border: solid black 1px; margin-block-start: 35px; } </style> </head> <body> <h1>The margin-block-start Property</h1> <div>A div element with no specified margins.</div> <div>A div element with no specified margins.</div> <div class="ex1">This div element has a margin of 35 pixels at the start in block direction.</div> <div>A div element with no specified margins.</div> <div>A div element with no specified margins.</div> </body> </html>