Hi Ying,
Auto-generate #ps2id-dummy-offset element is a function within the Scroll to Id plugin.
In their manual:
Enable if you want the plugin to create a hidden element and use its selector as offset. The element that will be created is: #ps2id-dummy-offset
You should use the #ps2id-dummy-offset value in the Offset option above. You should then use the same selector/value and in your CSS and give it a height equal to the amount of offset you want.
In that case you can write in the stylesheet:
#ps2id-dummy-offset {
height: 0px;
}
@media only screen and (min-width: 768px) {
#ps2id-dummy-offset {
height: 35px;
}
}
But it seems that it is not working properly…
Regards, Sander