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CSS justify-content 属性
trycss3_js_justify-content
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<!DOCTYPE html> <html> <head> <style> #main { width: 400px; height: 150px; border: 1px solid #000000; display: flex; justify-content: space-around; } #main div { width: 70px; height: 70px; } </style> </head> <body> <h1>Change justify-content with JavaScript</h1> <div id="main"> <div style="background-color:coral;"></div> <div style="background-color:lightblue;"></div> <div style="background-color:pink;"></div> </div> <p>Click the "Try it" button to set the value of the justifyContent property to "space-between"</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { document.getElementById("main").style.justifyContent = "space-between"; } </script> </body> </html>