Run ❯
Get your own website
❯Run Code Ctrl+Alt+R
Save Code Ctrl+Alt+A
Change Orientation Ctrl+Alt+O
Change Theme Ctrl+Alt+D
Go to Spaces Ctrl+Alt+P
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="none"> <style> .collapsing { background-color: yellow; } </style> </head> <body> <div class="container"> <h2>Simple Collapsible</h2> <button type="button" class="btn btn-lg btn-info collapsed" data-toggle="collapse" data-target="#demo">Simple collapsible</button> <div id="demo" class="collapse"> The .collapsing class is added when the transition starts, and removed when it is finished. In this example, the collapsible content gets a yellow background for those seconds it takes to show the content. The background color is removed when the transition has ended. </div> </div> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/edibu.js"></script> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/tongji.js"></script></body> </html>