Run ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <head> <style> #myDIV { width: 300px; height: 300px; margin-top: 20px; background-color: lightgreen; border-block-start-width: 10px; border-block-start-style: solid; border-block-start-color: black; } </style> </head> <body> <h1>Change border-block-start-color with JavaScript</h1> <p>Click the "Try it" button to change the border-block-start-color property of the DIV element:</p> <button onclick="myFunction()">Try it</button> <div id="myDIV"> <h1>Hello</h1> </div> <script> function myFunction() { document.getElementById("myDIV").style.borderBlockStartColor = "pink"; } </script> </body> </html>