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CSS margin-block-start 属性
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<!DOCTYPE html> <html> <head> <style> button { margin-bottom: 10px; } #myDIV { background-color: lightblue; border: solid black 1px; } .redDiv { background-color: rgb(239, 135, 88); text-align: center; } </style> </head> <body> <h1>Change margin-block-start with JavaScript</h1> <p>Click the "Try it" button to change the margin-block-start of the blue DIV element:</p> <button onclick="myFunction()">Try it</button> <div class="redDiv">div</div> <div id="myDIV"> This is my DIV element. </div> <div class="redDiv">div</div> <script> function myFunction() { document.getElementById("myDIV").style.marginBlockStart = "20px"; } </script> </body> </html>