Difference between marginLeft and paddingLeft:
<!DOCTYPE html> <html> <head> <style> div {/*w w w .j a v a 2 s . com*/ border: 1px solid #FF0000; } </style> </head> <body> <div id="myDiv">This is some text.</div> <br> <button type="button" onclick="changeMargin()">Change left margin of the div element</button> <br><br> <div id="myDiv2">This is some text.</div> <br> <button type="button" onclick="changePadding()">Change left padding of the div element</button> <script> function changeMargin() { document.getElementById("myDiv").style.marginLeft = "100px"; } function changePadding() { document.getElementById("myDiv2").style.paddingLeft = "100px"; } </script> </body> </html>