Difference between the margin property and the padding property:
<!DOCTYPE html> <html> <head> <style> div {//from www . j a v a2s . co m border: 1px solid #FF0000; } </style> </head> <body> <div id="myDiv">This is some text.</div> <br> <button type="button" onclick="changeMargin()">Change margin of the div element</button> <br> <br> <div id="myDiv2">This is some text.</div> <br> <button type="button" onclick="changePadding()">Change padding of the div element</button> <script> function changeMargin() { document.getElementById("myDiv").style.margin = "100px"; } function changePadding() { document.getElementById("myDiv2").style.padding = "100px"; } </script> </body> </html>