<pre><span><style>

[data-test="nav-bar"] >div +* {
  color: transparent !important; 
}

.nav-bar-root {
  content: "";
  display: flex;
  background-image: url(your logo URL here);
  background-size: 45px 40px;
  background-repeat: no-repeat; 
  background-position: center, center;
}