A couple of things..
There are two css files. One in main, the other in /css. Remove from main.
The html formatting is hard to read.
There’s an extra <style></style>
at the top.
In the css, remove:
/* Material Tab Specific Styles */
#material {
display: flex;
flex-direction: column;
height: 100%; /* Take full height of tab-content */
}
The panel content should now be at the top.
The extension loads with errors for me. It’s interesting. I’m going to look at the materials stuff later.