"grey bar" in horizontal stack

[JVSDR92]

Hi everyone,

I got a problem with my horizontal stack, i have a grey bar over the full width of my screen and i can't figure out how to fix this. I tried mutiple things but at this moment I have no clue anymore.
Does somebody recognize this problem and know how to fix it? That would be very helpfull!

[Raabjerg]

Hi.
You cant get it to disappear by adding this code in the Bubble card configuration/Horizontal buttons stack “Show code editor”
styles: |
.horizontal-buttons-stack::before {
background: none !important;
}