"There's an error with your CSS code, please review it." When trying to publish my style

[farisfaikar]

I need help when trying to publish my own style. Here's the CSS code

#logo-icon
{
  content: url("https://media.tenor.com/65mRO-L3k2EAAAAj/spinning-maxwell.gif") !important;
  width: 120px;
  height: 35px;
  object-fit: cover;
}

ytd-topbar-logo-renderer
{
  width: 0%;
}

I've tested that code and it works flawlessly for me when I try using it as a private style. But when I try to publish it, it gave me this error

Caution

There's an error with your CSS code, please review it.

How do I fix this and publish my style properly? Thanks!