I’m running Sparkling on my page for a while now, but lately a strange problem occured. On some machines an empty space between the nav bar and the content appeares. Sometimes refreshing the page makes it disappear, sometimes it stays, and on some machines it doesn’t occur at all. See the attached picture for an example where it occurs exactly. This problem occurs on every subpage, no matter the content. I could not find the source for the problem, as it seems to occur with different browsers on different machines.
Some troubleshooting leads me to believe that the problem might be connected to the .site-header class, rather than the content. Setting the .site-header margins negative fixes the problems on machines where it occurs, but breaks the page for those that do not have that problem.
It seems some users had a similar problem with the Shapely theme (e.g. https://colorlib.com/wp/forums/topic/white-space-under-shapely-header-above-content-section/). There, it seems connected to the shapely_home_parallax class and its paddings. However, I could not find out what the corresponding class of the Sparkling theme would be.
I hope you can help me with this issue!