Something strange is happening with my code. I am utilizing JQueryUI to enable dragging of div elements that contain an image tag. The issue arises when I start dragging the div - the image, which was perfectly centered within the div while stationary, now shifts all the way to the left during the dragging process.
Adding a helper element to the body of my HTML seems to be the root cause of this problem. When the helper is not added directly to the body, the issue disappears. It's puzzling because there are no CSS styles in my body that should affect the layout in such a way.
Here is the CSS for the parent div:
.draggable-stream {
vertical-align: top;
background-color: white;
display: inline-block;
height: 9vh;
width: 9vh;
margin-left: 4%;
margin-top: .5vh;
border-radius: 50%;
box-shadow: 1px 1px 2px #555;
}
And here is the CSS for the contained image:
.draggable-img {
margin-top: 14%;
height: 6vh;
width: 6vh;
margin-bottom: 0;
}
Upon inspecting the elements with Firebug, it appears that the helper element being dragged has the same values as the stationary one, without any additional margins. Interestingly, adding a margin to the .draggable-img class resolves the issue for both the helper and stationary elements. However, since the stationary image was initially centered, applying a margin disrupts its centering while bringing the helper image back to center.
I should note that Bootstrap and JQueryUI CSS are also included in my project, but based on Firebug's analysis, these external styles do not seem to interfere with my custom styles.